Electric Jet Skis operates a jet ski rental business. Assume the jet skis rent for $$55$ for $6$ hours. The variable costs are $$23$ per $6$ hour rental, and its fixed costs are $$60,000$ each month. What is the contribution margin per $6$ hour jet ski rental

A$.$ $$0\mathrm{.}58$

B$.$ $$1\mathrm{.}72$

C$.$ $$32\mathrm{.}00$

D$.$ $$23\mathrm{.}00$