Question I (12 points) The price of a stock is currently $50. It is known that at the end of six months it will be either $45 or $55. The risk-free interest rate is 10% per annum with continuous compounding. What is the value of a six-month European put option with a strike price of $50? Please use the one-period risk-neutral valuation to solve this problem. You do not necessarily need to draw the tree