(20pts) Consider the following binomial option pricing problem involving an American call. This call has two periods to go before expiring. Its stock price is 30, and its exercise price is 25. The risk-free rate is 0.05, the value of u is 1.15, and the value of d is 0.90. The stock pays a dividend at the end of the first period at the rate of 0.06. Find the value of the call. A binomial tree is not provided. You will need to construct a two-priod binomnal tree for this option pricing on your own (check Binomial Stock Option Pricing.xlsx). Or, you could solve in the most comfortable way (e.g., you could find the optin value without drawing a bonomial tree).