Please write out correct answer and whether it's A, B, C or D. Thank you.

Han Products is purchasing carrying cases at a delivered cost of $14 per unit. The company, currently operating below full capacity. The costs to produce carrying cases is expected to be: Direct materials Direct labor Variable factory overhead (20% of direct labor) 8.00 6.00 1.20 Total variable cost per unit 15.20 If Han Products makes the carrying cases instead, fixed factory overhead costs of $2.00 will not increase. The selling price of the carrying case will remain the same at $10. Han Products should O switch to making the cases because differential income is $ 3.20 continue to purchase the cases because differential income is $ 3.20 switch to making the cases because differential income is $ 1.20 continue to purchase the cases because differential income is $ 1.20