TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: A

PROBLEM: Which process causes water to move from the ocean to the atmosphere during the formation of a hurricane?  
 (A) condensation (B) evaporation (C) precipitation (D) runoff

SOLUTION: B

PROBLEM: Which form of energy are x rays and ultraviolet light?  
 (A) nuclear (B) heat (C) electromagnetic (D) chemical

SOLUTION:
C