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'.

Ex Input:
Sentence: A knob rolled across a wooden table travels at a lower rate of speed then one rolled across a metal table. Question: Which surface provides more friction to the knob? (A) wooden table (B) metal table

Ex Output:
A


Ex Input:
Sentence: Greg and Hank each plan a cross country journey. Greg takes a car. Hank wants to walk cross country. Question: Who crosses the country first? (A) Greg (B) Hank

Ex Output:
A


Ex Input:
Sentence: An empty dump truck and a dump truck full of iron ore start towards each other, as fast as they can, from opposite ends of a long street. Question: Which truck makes it 100 feet before the other truck? (A) the empty dump truck (B) the dump truck full of iron ore

Ex Output:

A