Consider a European put option with a maturity of 9 months on a bond with an 8-year maturity, a coupon rate of 8% payable semi-annually and a nominal value of $1,000. The cash price of this bond is $960 and the next coupon will be paid in 3 months. The 3 and 9 month risk-free contained rates are 9% and 10%.

Using the Black-Scholes formula, what is the price of this European put option if the strike price is $1000 and the volatility is 8%?

1. O 15,41 $
2. O 40,28 $
3. O 2,20 $
4. O 52,92 $
5. O 63,31 $