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.

[Q]: Rock layers with sand-sized particles were most likely deposited by  
 (A) wind. (B) water. (C) glaciers. (D) landslides.
[A]: A


[Q]: In which case does a physical change occur?  
 (A) Ice melts into water. (B) Bread burns in a toaster. (C) A cake bakes in an oven. (D) Two chemicals form a new substance.
[A]: A


[Q]: A student throws a ball into the air. While the ball travels up, the speed of the ball decreases. What force causes the ball to slow while traveling up?  
 (A) electricity (B) gravity (C) magnetism (D) tension
[A]:
B