Solve the Problem $c=144 \sqrt{n}+81$ , Where $c$ Is Cost And $n$ Is Units Sold

Multiple Choice

Solve the problem.
-A retailer finds that total costs per day are given by $c=144 \sqrt{n}+81$ , where $c$ is cost and $n$ is units sold. What is $\mathrm{c}$ when no units are sold?

A) $\$ 108$
B) $\$ 1296$
C) $\$ 225$
D) $\$ 81$