Wilhelm Oversees the Shipping Department in a Warehouse for a Major

Wilhelm oversees the shipping department in a warehouse for a major chain of stores. He knows some packages are being damaged, and he needs specific numbers so he can calculate the impact on departmental costs. What method will enable Wilhelm to efficiently collect accurate data so that he can make the calculations he needs in this situation?

A) asking his shift supervisors to tell him how many packages they estimate they lost each day
B) programming the machinery to count all shipped and damaged packages and generate a computerized report daily
C) observing the workers on the shipping conveyor as they process packages
D) interviewing a representative sample of workers in the shipping department to see how bad they think the damage is
E) contacting the shipping supply company to see if he has ordered significantly more supplies than last year