In the emergency department of a medical center, the requirement for staff MDs’ time is estimated to be 20,000 minutes per day. The utilization target for MDs is 95%. The medical center’s benefit plan for staff MDs includes 10 holidays, 10 sick days, and 21 paid vacation days per year. Determine the core level of MD FTEs for the emergency department. Determine the final core level of MD FTEs if all staff are scheduled for 8-hour shifts, using a 5/40 scheduling plan. Determine the final core level of FTEs if MDs work on a 4/40 scheduling plan.