Instructions: 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: A student is investigating Newton's second law of motion by changing the force acting on an object and observing its resulting acceleration. If the force on the object were increased four times, by how much would the acceleration increase?
(A) 2 times (B) 4 times (C) 8 times (D) 16 times
Output:
B