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]: What type of galaxy is the Milky Way?  
 (A) spiral (B) elliptical (C) irregular (D) oval
[A]: A


[Q]: Which statement best describes how birth and death rates compare in a population at carrying capacity?  
 (A) The birth rate is greater than the death rate. (B) The birth rate is less than the death rate. (C) The birth rate is equal to the death rate. (D) The birth rate and the death rate are zero.
[A]: C


[Q]: Which list is correctly ordered from smallest to largest?  
 (A) Biosphere, organism, ecosystem, population (B) Community, organism, ecosystem, biosphere (C) Organism, population, community, ecosystem (D) Population, ecosystem, community, biosphere
[A]:
C