Please explain

24) Which of the following statements is TRUE with regard to the ERR? A) The approximate ERR can be used to evaluate a project, whether a simple investment or not. B) For a simple investment, the precise ERR is greater than the IRR. C) The approximate ERR is just a proxy for the IRR. D) The precise ERR is a proxy for the IRR. E) For a simple investment, the approximate ERR is greater than the IRR