Which of the following statements regarding fiduciary responsibility is correct?
I. Individuals who sell investments to the plan usually are considered fiduciaries.
II. The exclusive-benefit rule requires that fiduciaries discharge their duties solely in the interest of the plan's participants and beneficiaries for the exclusive purpose of providing benefits and defraying reasonable expenses.
III. Fiduciaries have to act in a manner consistent with an ordinary prudent person.
A. I only
B. II only
C. III only
D. I and II only
E. I, II, and III