Given the task definition and input, reply with output. 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: Lisa was playing with two model rockets. She shot off the red one and the black one at the same time. After 30 seconds the black one was higher in the sky. Question: Which had more speed? (A) the red one (B) the black one
the black one