You will be given a definition of a task first, then some input of the task.
You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or 'B'.

Sentence: Kory set up two slides in his backyard. One slide is metal and doesn't create much friction, while the other slide is wood and creates more friction. Question: If Kory slides down both slides, which one will he go quicker on? (A) metal slide (B) wood slide
Output:
A