Use the following data to calculate the Weighted Average Cost of Capital for Walgreen's.

$\backslash$table$[[,$cost$,$weight$],[$Cost of Equity,$12\mathrm{.}40\%,0\mathrm{.}60],[$Cost of Bond #$1-$ Pretax,$4\mathrm{.}00\%,0\mathrm{.}25],[$Cost of Bond #$2-$ Pretax,$5\mathrm{.}00\%,0\mathrm{.}15]]$

a$.$

$7\mathrm{.}63\%$

b$.$

$8\mathrm{.}70\%$

c$.$

$8\mathrm{.}06\%$

d$.$

$8\mathrm{.}82\%$

$7\mathrm{.}63\%$ was wrong.