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").

Example Input: If a leg is moving then the bones inside the skin are (A) being controlled by brawn (B) being slowly softened up (C) being made to break down (D) being torn into pieces
Example Output: A

Example Input: A horse in a field under the summer sun was glistening wet even though it hadn't rained. (A) the other horses were licking that horse (B) sweat glands released liquid to cool off the horse (C) sweat glands dried up (D) The horse needed a shower and was getting oily
Example Output: B

Example Input: The skeletal system protects the (A) ears (B) stomach (C) nose (D) thighs
Example Output:
B