You notice that the index value on a price$-$weighted index has increased $20$ points today. Knowing that the divisor is currently around $3\mathrm{.}5,$ what is the most useful interpretation you can make given this information?

Multiple Choice

The index has increased in value by $20\%$ today.

The price of all the stocks in the index collectively rose by approximately $$70$ today.

The average price of a stock in the index increased by approximately $$3\mathrm{.}50$ today.

We cannot make a useful interpretation since we do not know the value of the index at the open of the market today.