6. Corruption of defined-benefit pension plans Which of the following are the types of corruption of defined-benefit pension funds? Check all that apply. Lack of proper oversight by trustees Unwarranted benefit payments Implementing an aggressive investment strategy to increase return on investments to reduce underfunding of pension plans Shift from defined-benefit to defined-contribution plans Bribes of trustees How might pension funds be able to prevent corruption? Check all that apply. Never issue bonds. Switch their pension plans from defined-benefit to defined-contribution plans. Ensure proper oversight of investment decisions. Ensure that their trustees are not subject to potential conflicts of interest