Answer the Following Question(s) Using the Information Below

Answer the following question(s) using the information below.
Kaiser's Kraft Korner sells a single product. 7,000 units were sold resulting in $70,000 of sales revenue, $28,000 of variable costs, and $12,000 of fixed costs.
-Contribution margin per unit is

A) $4.00
B) $4.29
C) $6.00
D) $10.00
E) $5.71