Suppose That the Price P (In Dollars)to Purchase a Used $\frac { \partial P } { \partial C } ?$

Multiple Choice

Suppose that the price P (in dollars) to purchase a used car is a function of C, its original cost (in dollars) , and its age A (in years) .So P = f(C,A) . What is the sign of $\frac { \partial P } { \partial C } ?$

A) Positive
B) Negative