You just took out a $30-$year mortgage for $$325,000$ at $5\%$ interest. How much of the first monthly payment will be applied to the principal balance?

A$)$ $$298\mathrm{.}65$

B$)$ $$389\mathrm{.}99$

C$)$ $$390\mathrm{.}50$

D$)$ $$1,354\mathrm{.}17$