Financial Markets have been closely studied over the last century. which of the following facts can we most likely conclude from financial markets over time?

a. returns on less risky assets have been lower on average that returns on more risky assets

b. the real interest rate has been slightly negative on average

c. Turns on risk assets are highly uncorrelated with each other

d. past performance is a good indication of future performance

e. we can conclude that all of the facts listed here as answers are correct.

Is it A?