What is the total price of X and Y?
A) $8 per unit for X and $4 per unit for Y
B) $40 for 1 unit of X and $30 for 1 unit of Y
C) $32 for 2 units of X and $20 for 2 units of Y
D) $96 for 3 units of X and $24 for 3 units of Y