Suppose that the utility function of an individual can be described as U(X,Y) = 4X + 2Y.

Suppose that the utility function of an individual can be described as U(X,Y) = 4X +

2Y. For this utility function the MRS

A) is always X*Y

B) is always constant

C) is always X/Y

D) is always X+Y

E) is always X-Y