Your firm has $$1,000\mathrm{.}00$ par value bonds with a $7\%$ annual coupon rate and $20$ years remaining until maturity. The bonds are currently selling for $$1,025$ per bond. For the calculation of your firm's WACC, what would you use for the before$-$tax cost of debt?

$$ A$.8\mathrm{.}41\%$

$$ B$.7\mathrm{.}00\%$

C$.5\mathrm{.}25\%$

D$.6\mathrm{.}77\%$