When the non$-$dividend paying stock price is $$30,$ the strike price is $$30,$ the risk$-$free rate is $8\%$ with continuous compounding, the volatility is $20\%,$ and the time to maturity is $3$ months, which of the following is the price of a European put option on the stock

Question $10$ Answer

a$.$

$30$N$(-0\mathrm{.}25)-29\mathrm{.}4$N $(-0\mathrm{.}15)$

b$.$

$30$N$(-0\mathrm{.}15)-29\mathrm{.}4$N $(-0\mathrm{.}25)$

c$.$

$29\mathrm{.}4$N$(-0\mathrm{.}25)-30$N$(-0\mathrm{.}15)$

d$.$

$29\mathrm{.}4$N $(-0\mathrm{.}15)-30$N$(-0\mathrm{.}25)$