Consider the three stocks in the following table. pt represents price at time t, and Qt represents shares outstanding at time t. Stock 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 lntermedlete calculetlons. Round your answers to 2 decimal pleces.) a. A market-value-weighted index. b. An equally weighted index