You are given a science question (easy-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.

Ex Input:
When light is bounced off a mirror, the light is  
 (A) reflected. (B) refracted. (C) absorbed. (D) diffracted.

Ex Output:
A


Ex Input:
People are developing electric cars that would replace gasoline-burning cars. One major advantage of the electric car is that it  
 (A) accelerates faster. (B) causes less pollution. (C) gives a smoother ride. (D) needs no battery.

Ex Output:
B


Ex Input:
Fossil fuels are formed  
 (A) in shallow areas over short periods of time. (B) from the remains of organisms. (C) in underground reservoirs that are relatively cool. (D) by high winds and temperatures.

Ex Output:

B