In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Ex Input:
Nerves all have (A) microscopic parts (B) short arms (C) viable organs (D) liver transplants

Ex Output:
A


Ex Input:
Heat can can cause matter to (A) shift phases (B) become intelligent (C) multiply (D) disappear

Ex Output:
A


Ex Input:
Adding force to a moving train will: (A) cause it to travel further in the same time (B) cause the structure to take up less space (C) cause it to travel less distance in the same time (D) increase the mass of the structure

Ex Output:

A