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:
If you took all of the atoms out of a chair, what would be left?  
 (A) The chair would still be there, but it would weigh less. (B) The chair would be exactly the same as it was before. (C) There would be nothing left of the chair. (D) Only a pool of liquid would be left on the floor.

Ex Output:
C


Ex Input:
Which would most likely be the characteristic of an object with a small volume and large mass?  
 (A) high density (B) low pressure (C) low viscosity (D) high temperature

Ex Output:
A


Ex Input:
The breakfast that a student ate provided energy for bicycling later in the day. Which energy transformation most likely occurred?  
 (A) radiant to nuclear (B) chemical to nuclear (C) radiant to mechanical (D) chemical to mechanical

Ex Output:

D