Which of the Following Is a Reason That Makes the Use

Which of the following is a reason that makes the use of fund performance history problematic?

A) Funds with high expense ratios tend to be poor performers.
B) The best performing funds may simply be the riskiest funds.
C) A fund tends to keep its performance ranking over time.
D) Mutual fund returns are difficult to measure.
E) All of the above are true.