Consider the three stocks in the following table. Pt represents price at time t, and represents shares outstanding at time t Stock splits two-for-one in the last period. PO 98 58 116 Op 100 200 200 Pi 103 53 126 01 100 200 200 P2 103 53 63 02 100 200 400 Calculate the first-period rates of return on the following indexes of the three stocks: (Do not round intermediate calculations. Round your answers to 2 decimal places.) a. A market value-weighted index Rate of return b. An equally weighted index Rate of return %