The following table provides a frequency distribution for the number of rooms in this country's housing units. The frequencies are in thousands a. Determine the number of outcomes (housing units) that constitute the event (not A). Rooms No. of units The number of housing units in event (not A) is 573 1,438 10,917 23,384 27,918 24,661 14,662 17,215 A = event that the unit has at most 4 rooms B = event that the unit has at least 2 rooms C = event that the unit has between 5 and 7 rooms, inclusive D = event that the unit has more than 7 rooms