You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Input: Consider Input: How many basic units of information in a DNA molecule are required to encode a single amino acid?  
 (A) 1 (B) 2 (C) 3 (D) 4

Output: C


Input: Consider Input: Which of the following is the farthest from Earth?  
 (A) Halley's comet (B) the Andromeda galaxy (C) Neptune (D) the Sun

Output: B


Input: Consider Input: Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?  
 (A) Frictional forces oppose the motion of the car. (B) Forward motion slowly runs out as energy is expended. (C) The natural state of an object is to be at rest. (D) Inertia acting on an object will dissipate.


Output: A