Assume that an investor has a manufacturing plant that produces automotive spare parts. The sale price of the part is 20 $/unit. The annual fixed cost of the plant is $1,700,000. Unit labor costs 8 $/unit, unit material cost 4 $/unit, unit overhead cost 2 $/unit. a)How many units should be produced to start making profit (X) b) How many units should be produced to make $3,700,000 profit (Y) Select one: a. X= 150000, Y= 250000 b. X=283333, Y- 450000 c. X166667. Y=250000 O d. X- 154545, Y-245454 e. X=250000, Y= 250000 f. X 200000. Y=200000