Use the Following to Answer Questions -(Table: Costs of Birthday Cakes)Use Table: Costs of Birthday Cakes

Use the following to answer questions : $$\begin{array}{l}\text { Table: Costs of Birthday Cakes }\\\begin{array} { c c } \hline \text { Quantity of cakes } & \text { Variable cost, } \boldsymbol { V C } \\\hline 0 & 0 \\1 & 15 \\2 & 25 \\3 & 30 \\4 & 38 \\5 & 50 \\6 & 70 \\\hline\end{array}\end{array}$$
-(Table: Costs of Birthday Cakes) Use Table: Costs of Birthday Cakes.Assume that fixed costs are $10.What is the average variable cost of four cakes?

A) $38.00
B) $10.00
C) $9.50
D) $8.00