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:
Which is the greatest benefit of sexual reproduction?  
 (A) capable of reproducing by meiosis (B) ability to reproduce without a mate (C) ability to produce genetically different offspring (D) capable of producing offspring genetically identical to parent

Ex Output:
C


Ex Input:
Which type of air mass forms over the ocean near the equator?  
 (A) moist and warm (B) moist and cool (C) dry and warm (D) dry and cool

Ex Output:
A


Ex Input:
Students measured how long it took for an ice cube to melt. Which measurement best represents how long it took for the ice cube to melt?  
 (A) 20° Celsius (B) 40 grams (C) 60 milliliters (D) 80 seconds

Ex Output:

D