deep mines had $43,800$ shares of common stock outstanding with a beta of $1\mathrm{.}54$ and a market price of $$51$ a share. there are $10,000$ shares of $7$ percent preferred stock outstanding with a stated value of $$100$ per share and a market value og $$83$ a share. the $8$ percent semiannuak bonfd have a face value of $1,000$ and are selling at $96$ percent of par. there are $5,000$ bonds outstanding that mature in $13$ years. the market risk premium id $7\mathrm{.}5$ percent, t$-$bills are yielding $3\mathrm{.}6$ percent and the tax rate is $21$ percent. what discounf raye shoulf the firm apply to a new project cash flows if

the project has the same risk as the company's typical project?

$8\mathrm{.}28$ percent

$8\mathrm{.}72$ percent

$9\mathrm{.}59$ percent

$9\mathrm{.}30$ percent