Consider a 6-month European put option with strike price of $2050 on a stock index if the current index value is $2000. The dividends paid by the stock included in the index can be approximated by a continuously compounded dividend yield of 4%. The risk-free interest rate is 6%. The standard deviation of the index price appreciation is =20%. b) Using Excel, find the value of this option using Cox-Ross-Rubenstein 10-step binomial option pricing model.