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.

Example Input: Cell division is necessary for an organism to  
 (A) obtain nutrients. (B) grow and reproduce. (C) make proteins. (D) conserve matter and energy.
Example Output: B

Example Input: Solids, liquids, and gases are all different states of which of the following?  
 (A) mass (B) matter (C) weight (D) volume
Example Output: B

Example Input: A snowball is made the exact size of a golf ball. Both the golf ball and the snowball are dropped from the same height onto a concrete sidewalk. The snowball breaks, but the golf ball bounces. Which of the following best describes a reason for the difference in reaction of the two balls?  
 (A) The snowball is colder than the golf ball. (B) The snowball is less dense then the golf ball. (C) The effects of friction are greater on the golf ball. (D) The effects of Earth's gravity are greater on the snowball.
Example Output:
B