A stock price is currently $40. Over the next 5-month period it is expected to go up by 15% or down by 4%, however, in the second 5-month period the expostation is that the stock price will increase or decrease by 10%. The risk-free interest rate is 8% per annum in the first 5-month period, while 10% per annum in the second. What is the value of a 10-month European call option with a strike price of $39?