Which statement about managed funds below is LEAST accurate? a. Investors looking for mutual funds are often better served in finding index tracking funds due to cost savings. b. Closed end funds tend to be problematic investments because the shares often trade at a significant discount to NAV. c. The average actively managed mutual fund tends to more than compensate their load fees for retail investors so they get strong long-run effective returns d. ETFs are very effective at keeping their prices close to NAV