At 10 Units of Output in Table 21

Multiple Choice

$$\begin{array}{l}\begin{array} { | l | r | r | r | r | } \hline \text { Output (units per day) } & 0 & 10 & 20 & 30 \\\hline \text { Total cost (dollars per day) } & \$ 40 & \$ 54 & \$ 62 & \$ 80 \\\hline\end{array}\\\text { Table } 21.2\end{array}$$ At 10 units of output in Table 21.2, the total fixed cost is

A) $44.
B) $14.
C) $40.
D) $54.