You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

Sentence: A tortoise isn't as fast as a turtle. Question: Which animal will take a longer time to reach the sea if both are walking across the beach? (A) tortoise (B) turtle
tortoise