The Historical Returns on Large-Company Stocks, as Reported by Ibbotson

The historical returns on large-company stocks, as reported by Ibbotson and Sinquefield and reported in your textbook, are based on the:

A) largest 20 percent of the stocks traded on the NYSE.
B) stock returns for the largest 10 percent of the publicly traded firms in the U.S.
C) returns of the 100 largest firms in the U.S.
D) returns of all the stocks listed on the NYSE.
E) stocks of the 500 companies included in the S&P 500 index.