Equity as an Option. Sunburn Sunscreen has a zero coupon bond issue outstanding with a $$10,000$ face value that matures in one year. The current market value of the firm's assets is $$10,900.$ The standard deviation of the return on the firm's assets is $31$ percent per year, and the annual risk$-$free rate is $6$ percent per year, compounded continuously. Based on the Black$-$Scholes model, what is the market value of the firm's equity and debt? Solve using Excel.