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]: India is in the Northern Hemisphere and Australia is in the Southern Hemisphere. In June, it is summer in India and winter in Australia. What is the main reason the seasons are opposite in the two countries?  
 (A) because Earth is tilted on its axis (B) because the Sun rotates on its axis (C) because Earth revolves around the Sun (D) because of the distance between the countries
[EX A]: A

[EX Q]: Which animal eats only plants?  
 (A) Cat (B) Dog (C) Lion (D) Rabbit
[EX A]: D

[EX Q]: Which property of Earth's interior keeps the innermost part in a solid state?  
 (A) relatively low temperature (B) extremely high pressure (C) high rate of heat flow (D) low rate of radioactive decay
[EX A]:
B