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").

Input: Consider Input: In a bowl of water with the sun shining on it, what happens to the water after four hours? (A) the water is growing algae (B) there is less water (C) the water is dirty (D) there is more water

Output: B


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

Output: A


Input: Consider Input: The skeletal system (A) is made up of tissue and organs (B) is made up of the lungs and heart (C) is made up of white blood cells (D) is made up of calcified material


Output: D