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: A bicycle is traveling at 3 meters per second (m/s). The rider applies the brakes and stops the bicycle in 3 seconds. What is the average rate of acceleration of the bicycle during this time?  
 (A) -1 m/s^2 (B) -6 m/s^2 (C) 3 m/s^2 (D) 9 m/s^2

Output: A


Input: Consider Input: Because water can hold a large amount of heat, which effect do oceans have on nearby land areas?  
 (A) They prevent rapid extreme temperature changes. (B) They form high-pressure areas that cause magma currents. (C) They provide the energy that triggers volcanic events. (D) They lower the freezing point of fresh water.

Output: A


Input: Consider Input: Which investigation will best test the effects of gravity on moving objects?  
 (A) pencils falling from the same height (B) balloons floating upward from the same height (C) a bicycle speeding up on a flat surface (D) a ball slowing down on a flat surface


Output: A