Help appreciated, thank you!

Of the following qualified retirement plans, which must follow the minimum funding requirements? I. defined benefit pension plans II. money purchase pension plans III. profit sharing plans IV. Section 401(k) plans V. Target benefit plans Select one: a. I, II, and III only b. I, II, and V only c. I, III, and IV only d. II, III, and V only e. I, II, III, IV, and V