老师这道题为什么不算total return?

The data for two stocks in an index are as follows:

StockShares OutstandingPercent of Shares in Market FloatBeginning of Period Price ($)End of Period Price ($)Dividends per Share ($)A5,0009040451.00B2,00010068600.50

Assuming the beginning value of the float-adjusted market-capitalization-weighted equity index is 100, the ending value is closest to:

1. 102.06.
2. 103.80.
3. 102.68.