Hollis Industries produces flash drives for computers, w to make. During April, 1,00 much is the contribution margin ratio? A) 25% B) 35% C) 65% D) 75% hich it sells for $20 each. Each flash drive costs $13 of variable costs 0 drives were sold. Fixed costs for March were $2 per unit for a total of $1,000 for the month. How