The current stock price of Johnson & Johnson is $58, and the stock does not pay dividends. The instantaneous risk-free rate of return is 7%. The instantaneous standard deviation of J&J's stock is 30%. You want to purchase a put option on this stock with an exercise price of $51 and an expiration date 75 days from now. Using Black-Scholes, the put option should be worth ______ today.

.48

.55

7.92

8.28