What is the correct interpretation of the cost function C(q) = 200 - 0.4q - 0.0002q2 + 0.00015q3, specifically for C(80)?
A. What is the cost function for manufacturing a product?
B. What is the value of C(q) when q = 80?
C. What is the cost of manufacturing a product when q = 80?
D. What is the cost function for manufacturing a product when q = 80?