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 Q]: A rubber band will make a sound when it is  
 (A) vibrated. (B) stretched. (C) cut into pieces. (D) shot across a room.
[EX A]: A

[EX Q]: When would the highest tides occur along the Texas coast?  
 (A) at sunrise (B) at sunset (C) during a full moon (D) during a half moon
[EX A]: C

[EX Q]: After a storm, a hospital may have to rely on backup generators to power some equipment. Which is the energy conversion provided by the generators?  
 (A) mechanical energy to electrical energy (B) thermal energy to mechanical energy (C) nuclear energy to mechanical energy (D) thermal energy to electrical energy
[EX A]:
A