Table 212 At 20 Units of Output in Table 21

Multiple Choice

Table 21.2 $\begin{array}{|l|r|r|r|r|}\hline \text { Output (units per day) } & 0 & 10 & 20 & 30 \\\hline \text { Total cost (dollars per day) } & \$ 40 & \$ 54 & \$ 62 & \$ 80\\\hline\end{array}$

At 20 units of output in Table 21.2,the average variable cost is

A) $1.10 per unit.
B) $1.75 per unit.
C) $2.00 per unit.
D) $3.10 per unit.