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]: A shallow container of salt water is placed in sunlight for a day. Which is the most likely result?  
 (A) All of the mixture will evaporate. (B) The salt will keep the water from evaporating. (C) The salt will separate from the water and float at the top of the container. (D) Only the water will evaporate and the salt will remain in the container.
[A]: D


[Q]: Which of these would help to prevent infections from occurring in small cuts and scrapes?  
 (A) apply a cold ice pack (B) raise the injured area (C) apply pressure to stop bleeding (D) wash the area with warm, soapy water
[A]: D


[Q]: Gravity is a measurable force of attraction which acts upon objects. Which characteristic determines the gravity of an object?  
 (A) friction (B) mass (C) tension (D) weight
[A]:
B