Q4) 20 marks) Consider a 10-month dollar-denominated American put option on British pounds. You are given that: 1. The current exchange rate is 1.65 US dollars per pound. 2- The strike price of the put is 1.86 US dollars per pound. 3- The volatility of the exchange rate is o=0.25. 4- The US dollar continuously compounded risk-free interest rate is 7%. 5- The British pound continuously compounded risk-free interest rate is 8%. a) Using a 10-period binomial model, calculate the price of the put. Q4) 20 marks) Consider a 10-month dollar-denominated American put option on British pounds. You are given that: 1. The current exchange rate is 1.65 US dollars per pound. 2- The strike price of the put is 1.86 US dollars per pound. 3- The volatility of the exchange rate is o=0.25. 4- The US dollar continuously compounded risk-free interest rate is 7%. 5- The British pound continuously compounded risk-free interest rate is 8%. a) Using a 10-period binomial model, calculate the price of the put