Which One of The Following is The Responsiveness to Business

Which one of the following is the responsiveness to business issues in commercial performance?

[A] Frequency of over shipments
[B] Quotations
[C] Timely reconciliation of cumulative shipments
[D] Timely supplier response to problems

Correct Answer for Which one of the following is the responsiveness to business issues in commercial performance is Timely supplier response to problems