APICS Exam CPIM-ECO Topic 2 Question 5 Discussion

A supplier of roller bearings makes lots of 10,000 and sorts them automatically according to size. In a typical lot of 10,000, the sizes break into the categories:

The product requires rollers on target or, at most, 0.0001 oversize. Experience indicates that 100% must be reinspected before use because the machine inspection lets a few defective units slip through. The supplier should be encouraged to take which of the following actions?