In interactive illustration $1$: Channel margins, Circuit Store sells the CollarPop pedometer sunglasses for $$27\mathrm{.}95$ at a $14\%$ margin while the wholesaler and the supplier each get a $20\%$ margin. What is CollarPop's per unit dollar contribution margin?

A$.$ $$0\mathrm{.}44$

B$.$ $$1\mathrm{.}81$

C$.$ $$2\mathrm{.}91$

D$.$ $$3\mathrm{.}85$