OM 28 888 Which of the following sales practices is permissible? An investment fund manager pays trader commissions on a sliding scale such that dealers which administer larger amounts of its mutual funds receive a higher trailer rate An investment fund manage lende money to a mutua und der An investment fund manager pays an expensive private action for a dealing representative of amatfund dealers An investment fund dewer pays commissions to dealers at the face of 50 on the sale of units with deferred sales Od