The Internal Rate of Return May Be Defined as The

The internal rate of return may be defined as the:

A) percentage increase in the value of an investment over its useful life.
B) the minimum return required by investors to hold a firm's securities.
C) the discount rate at which a project's NPV is negative.
D) the discount rate at which a project's NPV equals zero.
E) the maximum rate of return expected from a project.