Please explain!

7. Which of the following statements would the Elton-Gruber-Rentzler study agree with? a. Commodity fund prospectuses accurately reflected the future performance of the commodity fund. 6. Returns on commodity funds were highly correlated with inflation. Commodity funds had relatively small total transaction costs. Ca. On average, commodity funds produced large excess returns. e. Commodity funds took initial positions which were both long and short. 7. Which of the following statements would the Elton-Gruber-Rentzler study agree with? a. Commodity fund prospectuses accurately reflected the future performance of the commodity fund. 6. Returns on commodity funds were highly correlated with inflation. Commodity funds had relatively small total transaction costs. Ca. On average, commodity funds produced large excess returns. e. Commodity funds took initial positions which were both long and short