If an economy moves from producing 10 units of A and 4 units of B to producing 7 As and 5Bs The opportunity cost of the 5th B is ?
A. 7As
B. 10As
C. 3As
D. 1A
If an economy moves from producing 10 units of A and 4 units of B to producing 7 As and 5Bs The opportunity cost of the 5th B is ?