Below is budgeted production and sales information for Flushing Company for the month of December: Product XXX Product zzz Estimated beginning inventory 28,300 units 17,600 units Desired ending inventory 35,800 units 15,300 units Region I, anticipated sales 327,000 units 274,000 units Region II, anticipated sales 180,000 units 142,000 units The unit selling price for product XXX is $6 and for product zzz is $16. Budgeted production for product XXX during the month is Oa. 542,800 units Ob. 514,500 units Oc. 499,500 units Od. 507,000 units