Your Weekly Cost (In Dollars)to Manufacture Cars and

Your weekly cost (in dollars) to manufacture cars and trucks is given by What is the marginal cost of a car? Of a truck?

A) Marginal cost of a car is 6,700 - 2.7183 e ^{0.05 ( x + y )} marginal cost of a truck is 3,400 - 2.7183 e ^{0.05 ( x + y )}
B) Marginal cost of a car is 6,700 - 2.7183 e ^{- 0.05 ( x - y )} marginal cost of a truck is 3,400 - 2.7 e ^{- 0.05 ( x - y )}
C) Marginal cost of a car is 3,400 + 2.7183 e ^{0.05 ( x + y )} marginal cost of a truck is 6,700 + 2.7183 e ^{0.05 ( x + y )}
D) Marginal cost of a car is 6,700 + 2.7183 e ^{- 0.05 ( x + y )} marginal cost of a truck is 3,400 + 2.7183 e ^{- 0.05 ( x + y )}
E) Marginal cost of a car is 6,700 + 2.7183 e ^{- 0.05 x} marginal cost of a truck is 3,400 + 2.7183 e ^{- 0.05 y}