Suppose pigs (P) can be fed corn-based feed (C) or soybean-based feed (S) such that the production function is P = 2C + 5S. If the price of corn feed is $2 and the price of soybean feed is $6, what is the cost minimizing combination of producing P = 200?
a. C = 100
b. S = 40
c. C = 50, S = 20