You are making investment plans for the next year. Bankers agree to extend credit with $18\%$ nominal interest but increase the interest to $20\%$ if credit is higher than $15$ million. Po is $57,$ Do is $4\mathrm{.}80$ g$-6\%$ and flotation costs are $10\%.$ Expected net income for next year is $18\mathrm{.}5$ milion of which $45\%$ will be distributed as dividends. Capital structure is $40\%$ debt, $60\%$ equity, corporate tax rate is $25\%.$

a$.$ Please calculate component costs and break points.

b$.$ Please calculate WACCs.

c$.$ If your only Project has IRR$=15\%$ and initial investment of $15$ million, would it be accepted? Why$/$why not?