Let P and C(x) = x, where x is the number of garden hoses that can be sold at a price of $P per unit and C(x) is the total cost (in dollars) of producing x garden hoses.
A) P = 0; C(x) = x
B) P = x; C(x) = 0
C) P = 1; C(x) = x
D) P = x; C(x) = 1