Which of the Following Is Not an Example of a Question

Which of the following is not an example of a question that should be asked when evaluating a supplier's production scheduling and control systems?

A) Does the supplier use a requirements planning system as part of an ERP system to ensure the availability of required components or meet service requests on a timely basis?
B) What lead time does the supplier's production scheduling and control system require?
C) What is the supplier's on-time delivery performance history?
D) Does the supplier's scheduling system support a purchaser's delivery requirements?
E) What safeguards are in place to protect the confidentiality of electronic transfers?