Answer:
2 and 3
Step-by-step explanation:
1 is incorrect because A does not seem to have a predator-prey relationship but C does
2 is correct because of the increase and decrease does indicate the predator-prey relationship B and C have
3 is correct because the over time the population remains the same since it is not harmed by B and C
4 is incorrect because if A was harmed by B and C, the population should decline.