$8.$ Continued from the previous question. What is the firm's weighted average cost of capital?

Group of answer choices

a$.5\mathrm{.}59\%$

b$.7\mathrm{.}20\%$

c$.9\mathrm{.}90\%$

d$.5\mathrm{.}70\%$

e$.6\mathrm{.}30\%$