Below is budgeted production and sales information for Flushing Company for the month of December Product XXX Product zzz Estimated beginning inventory 31,100 units 19,500 units Desired ending Inventory 34,500 units 15,200 units Region I, anticipated sales 321,000 units 254,000 units Region II, anticipated sales 183,000 units 140,000 units The unit selling price for product XXX is $5 and for product ZZZ is $16. Budgeted production for product XXX during the month is Oa. 507,400 units Ob. 538,500 units Oc. 500,600 units Od. 504,000 units