Calculate the durations and volatilities of securities A, B, and C. Their cash flows are shown below. The interest rate is 8%. (Do not round intermediate calculations. Round "Duration" to 4 decimal places and "Volatility" to 2 decimal places.) Show all you calculations and explain the results. Project Period 1 Period 2 Period 3 Duration Volatility A 60 60 80 B 40 40 160 C 30 30 150