Consider the three stocks in the following table. P_t represents price at time t, and Q_t represents shares outstanding at time t. Stock C splits two for one in the last period. 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. Omit the "%" sign in your response.) a. A market-value-weighted index. Rate of return % b. An equally weighted index. Rate of return %