Teacher:You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.
Teacher: Now, understand the problem? Solve this instance: Paragraph- Sent 1: Mr. Andrews pointed to one of the oak chairs.
Sent 2: "You sit there," he commanded, "it's reserved for members of the bar, but it's all right.
Sent 3: You're with ME." Distinctly annoyed, slightly bewildered, the banker sank between the arms of a chair.
Sent 4: He felt he had lost his individuality.
Sent 5: Andrews had become his sponsor.
Sent 6: Because of Andrews he was tolerated.
Sent 7: Because Andrews had a pull he was permitted to sit as an equal among police-court lawyers.
Sent 8: No longer was he Arnold Thorndike.
Sent 9: He was merely the man "with Mr. Andrews." Then even Andrews abandoned him.
Sent 10: "The judge'll be here in a minute, now," said the assistant district attorney, and went inside a railed enclosure in front of the judge's bench.
Sent 11: There he greeted another assistant district attorney whose years were those of even greater indiscretion than the years of Mr. Andrews.
Sent 12: Seated on the rail, with their hands in their pockets and their backs turned to Mr. Thorndike, they laughed and talked together.
Sent 13: The subject of their discourse was one Mike Donlin, as he appeared in vaudeville.
Sent 14: To Mr. Thorndike it was evident that young Andrews had entirely forgotten him.
Sent 15: He arose, and touched his sleeve.
Sent 16: With infinite sarcasm Mr. Thorndike began: "My engagements are not pressing, but—" A court attendant beat with his palm upon the rail.
Sent 17: "Sit down!" whispered Andrews.
Sent 18: "The judge is coming." Mr. Thorndike sat down.
Sent 19: The court attendant droned loudly words Mr. Thorndike could not distinguish.
Sent 20: There was a rustle of silk, and from a door behind him the judge stalked past. 
Question: Who sits down after Andrew whispers "Sit down"? (A) His police officer (B) The banker (C) The district attorney (D) Mr. Thorndike (E) His sponsor.
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
B, D, E.