单项选择题

______ you fulfill the terms of the credit we will accept and pay on maturity the draft presented to us under this credit and if required, ______ discounting facilities at current rates.
   A.Provided, provide        B.Provided, providing
   C.Provide, providing        D.Provide, provide

A.

B.Provided,
C.Provided,
D.Provide,
E.Provide,