As a bond fund manager, you are considering $10-$year corporate bonds issued by Mellon Bank $($MB$).$ Each MB bond has a $$1,000$ par value with $8\%$ annual coupon rate. The coupons are paid semi$-$annually. The estimated rate of return on MB bond is $10\%.$ One year later, the yield increases to $11\%.$ What is the current yield of the bond?

A$.$

$9\mathrm{.}62\%$

B$.$

$6\mathrm{.}78\%$

C$.$

$3\mathrm{.}35\%$

D$.$

$4\mathrm{.}80\%$