Consider the three stocks in the following table. Pt represents price at time t, and Qt represents shares outstanding at time t. Stock C splits two for one in the last period. A B C Po 145 135 270 Q0 155 310 310 P1 150 130 275 Q1 155 310 310 P2 150 130 140 Q2 155 310 620 Calculate the first-period rates of return on the following indexes of the three stocks (t= 0 to t= 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 %