Beef Patty Co. sells three cheeseburgers for every four regular hamburgers. A cheeseburger sells for $3.50 with a variable cost of $2.75. A regular hamburger sells for $2.75 with a variable cost of $1.00. What is the weighted average contribution margin?

A.

$9.25

B.

$3.70

C.

$1.32

D.

$1.48