Orange Co. manufactures 3 products. Budgeted data for the upcoming year is as follows: A4 B5 C6 $168 $90 $122 CM/Unit Direct labour hours per unit 5.52 4.38 3.11 128 260 313 Maximum expected demand Orange Co. is limited to 1200 hours of direct labour in a given year. How many units of product A4 should be produced to maximize contribution margin? Select one: a. 227 b. 41 C. 128 d. 73