Suppose that short rate r is 4% and its real-world process is
![](https://book.transtutors.com/qimg/af179747-10cb-480b-9c3b-dea54a269d6f.png)
while the risk-neutral process is
![](https://book.transtutors.com/qimg/2a435901-6fac-4fa6-a897-f6d79f64aa2c.png)
(a) What is the market price of interest rate risk?
(b) What is the expected return and volatility for a 5-year zero-coupon bond in the riskneutral world?
(c) What is the expected return and volatility for the 5-year zero-coupon bond in the real world?