Below is budgeted production and sales information for Flushing Company for the month of December: Product XXX Product ZZZ Estimated beginning inventory 28,800 units 19,400 units Desired ending inventory 35,700 units 14,900 units Region I, anticipated sales 310,000 units 278,000 units Region II, anticipated sales 183,000 units 146,000 units The unit selling price for product XXX is $6 and for product ZZZ is $14. Budgeted production for product XXX during the month is a. 486,100 units b. 493,000 units c. 528,700 units d. 499,900 units