Some question: A train 90 m long running at 56 kmph crosses a platform in 18 sec. What is the length of the platform?
Options:
(A) 190
(B) 200
(C) 180
(D) 881
(E) 271
Some stream of consciousness:

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
D = 56 * 5/18 = 25 = 280 – 90 = 190 The answer: (A).