As a Financial Analyst, you are estimating a company's stock value using discounted free cashflow model. The free cashflow you used is free cashiflow to the entire business. Your estimation is as following

Value of the firm estimated: $$30,000,000$

Value of the total debt: $$10,000,000$

Value of the prefered stocks: $$5,000,000$

Number of shares outstanding: $1,000,000$

What is the per share value of common stock?

$30$

$25$

$5$

$15$