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.
--------
Question: The ounce, the pound, and the ton are units of  
 (A) time. (B) weight. (C) length. (D) distance.

Answer: B


Question: Which of the following helps the body to cool down?  
 (A) shivering (B) sweating (C) running a fever (D) taking deep breaths

Answer: B


Question: When crossing parents with genotypes Rr and rr, what will be the percentages of the genotypes of the offspring?  
 (A) 75% Rr, 25% rr (B) 50% Rr, 50% rr (C) 100% Rr (D) 100% rr

Answer:
B