Dillon Labs has asked its financial manager to measure the cost of each specific type of capital as well as the weighted

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Dillon Labs has asked its financial manager to measure the cost
of each specific type of capital as well as the weighted average
cost of capital. The weighted average cost is to be measured by
using the following​ weights: 30​% ​long-term debt, 15​%
preferred​ stock, and 55​% common stock equity​ (retained
earnings, new common​ stock, or​ both). The​ firm's
tax rate is 28​%.Debt The firm can sell for ​$1000 a 13​-year,
​$1,000​-par-value bond paying annual interest at a 11.00​% coupon
rate. A flotation cost of 3.5​% of the par value is required.
Preferred stock  10.00​%​(annual dividend) preferred stock having a
par value of ​$100 can be sold for $94. An additional fee of ​$2
per share must be paid to the underwriters. Common
stock  The​ firm's common stock is currently selling for ​$90
per share. The stock has paid a dividend that has gradually
increased for many​ years, rising from $3.00 ten years ago to
the ​$4.44 dividend​ payment, D0​,that the
company just recently made. If the company wants to issue new new
common​ stock, it will sell them ​$1.50 below the current
market price to attract​ investors, and the company will pay​
$3.50 per share in flotation costs.  
a.  Calculate the​ after-tax cost of debt.
b.  Calculate the cost of preferred stock.
c.  Calculate the cost of common stock​ (both retained
earnings and new common​ stock).
d.  Calculate the WACC for Dillon Labs.