Consider the three stocks in the following table. P+ represents price at time t, and 0+ represents shares outstanding at time t Stock C splits two for one in the last period. Po A 145 00 P1 155 150 01 P2 02 155 150 155 B 135 C 310 310 270 130 280 310 130 310 140 310 620 Calculate the first-period rates of return on the following indexes of the three stocks (t=0 to f=1): (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: %