Solve the problem.The population P of a predator mammal depends upon the number x of a smaller animal that is its primary food source. The population s of the smaller animal depends upon the amount a of a certain plant that is its primary food source. If 
and 
what is the relationship between the predator mammal and the plant food source?
A. P(s(a)) = 12a2 + 30a + 77
B. P(s(a)) = 12a2 + 60a + 77
C. P(s(a)) = 4a2 + 20a + 27
D. P(s(a)) = 6a + 7
Answer: B
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