Chang Industries has 2,000 defective units of product that have already cost $14 each to produce. A salvage company will purchase the defective units as they are for $5 each. Chang's production manager reports that the defects can be corrected for $6 per unit, enabling them to be sold at their regular market price of $21. Chang should:

A. Sell 1,000 units to the salvage company and repair the remainder.

B. Throw the units away.

C. Sell the units as they are because repairing them will cause their total cost to exceed their selling price.

D. Correct the defects and sell the units at the regular price.

E. Sell the units to the salvage company for $5 per unit.