Which One of the Following Customers Is Most Apt to Be

Which one of the following customers is most apt to be granted the most liberal credit terms?

A) One-time customer who will not be returning.
B) One-time customer who has the potential of being a large volume customer.
C) Long-standing cash customer who buys in small volume.
D) Repeat customer who will always be a small volume customer.
E) Repeat customer who has the potential of being a large volume customer.