Harbin Manufacturing has 10 million shares outstanding with a current share price of $20.48 per share. In one year, the share price is equally likely to be $31 or $18. The risk-free interest rate is 5%. a. Using the risk-neutral probabilities, what is the value of a one-year call option on Harbin stock with a strike price of $25? b. What is the expected return of the call option? c. Using the risk-neutral probabilities, what is the value of a one-year put option on Harbin stock with a strike price of $25? d. What is the expected return of the put option?