Our usual terms of payment are by irrevocable sight L/C, reaching us one month ____ shipment, remaining valid ____ negotiation in China ____ .
A.
before, on, to allow transshipment and partial shipments
B.
after, in, and allow transshipment and partial shipments
C.
before, for, and allowing transshipment and partial shipments
D.
after, with, and allowing transshipment and partial shipments