10. Consider the following data for the three stocks that make up the market: P1eriod $70(A) $70(B) $25(C) Stock Period 0 $60(A) $80(B) $20(C)

a. What is the single-period return on the price-weighted index constructed from the three stocks?

b) What is the single-period return on the price-weighted index constructed from the three stocks if stocks A and B were to split 2 for 1 and 4 for 1, respectively, after period 0?