A company has the choice of either selling 430 defective units as scrap or rebuilding them. The company could sell the defective units as they are for $2.10 per unit. Alternatively, it could rebuild them with incremental costs of $0.60 per unit for materials, $2.00 per unit for labor, and $2.00 per unit for overhead, and then sell the rebuilt units for $12.00 each. What is the amount of incremental revenue from rebuilding?

• $9.90 per unit.

• $12.00 per unit.

• $14.10 per unit.

• $4.60 per unit.

• $5.30 per unit.