In this task, you're given four sentences of a story written in natural language. The given story is not complete and your job is to complete the story by selecting one of the end sentence choices from (A) and (B), such that the story does not sound complete and coherent, i.e., select an incorrect end sentence.
Q: Sentence1: Kim saw a mother unloading her shopping cart in a parking lot. Sentence2: The mother's little toddler was sitting in the cart's child seat. Sentence3: Suddenly, while the mother was turned, the cart started rolling away! Sentence4: Kim, realizing the child was in great danger, lunged toward the cart. 
 (A) KIm breathlessly saved the child. (B) Kim saved the cart but let the child go.
A:

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