The WACC for the Pioneer case is $11\mathrm{.}28\%.$ If the company increased its debt to $65\%$ and used

the proceeds to buy back stock what is the WACC?

A$.10\mathrm{.}3\%$

B$.11\mathrm{.}0\%$

C$.15\mathrm{.}8\%$

D$.11\mathrm{.}28\%$