How do you classify a prepayment as permanent?

How do you classify a prepayment as permanent?

A.
Create the prepayment invoice with the prepayment type as Permanent.

B.
Leave the Apply after date field blank in the Invoice Header.

C.
Deselect the Allow Prepayment Application option in the Invoice Header page.

D.
Permanent prepayments are not allowed.

E.
Deselect the Allow Prepayment Application option In the Invoice Line.