A Portfolio Manager at HSBC bank is structuring a fixed income portfolio to meet the objective of a client. The client has specified the use of AAA-rated securities. As the Portfolio Manager, you are convincing the client to buy this bond. Based on the data in the table: Bond's Description Maybank Issuer Name Company Ticker Coupon (%) TF1800089 12 Annually Interest Payment Maturity 4 years 98.75 Last Price Yield to Maturity (%) 9.0 RAM Rating AAA a. As the Portfolio Manager, explain the ways to measure the bond's price volatility in managing the fund strategies. (5 Marks) b. Determine the Macaulay duration and Modified for this bond? (10 Marks)