You are given a science question (hard-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]: Molly was making iced tea by putting tea bags in boiling water. She needed to cool the hot tea quickly, so she poured it into a pitcher full of ice. Which best describes the flow of thermal energy?
(A) from the ice to the tea (B) from the tea to the ice (C) from the pitcher to the tea (D) from the ice to the pitcher
[EX A]: B

[EX Q]: Black fur is dominant to white fur in guinea pigs. If two black guinea pigs (Bb) are crossed, what color will the fur of their offspring be?
(A) 100% black (B) 100% white (C) 50% black, 50% white (D) 75% black, 25% white
[EX A]: D

[EX Q]: Some students used a hot plate to heat 1 L of water from 20C to the boiling point of water. The students recorded the temperature of the water each minute until it began to boil. Which of the following provides the most appropriate way to represent the data?
(A) a bar graph with temperature on the y-axis and time on the x-axis (B) a bar graph with time on the y-axis and temperature on the x-axis (C) a line graph with temperature on the y-axis and time on the x-axis (D) a line graph with time on the y-axis and temperature on the x-axis
[EX A]:
C