A documentary credit advised to a beneficiary payable at sight calls for documents to include an invoice made out in the name of the applicant. Documents presented to the egotiating bank by the beneficiary include a customs invoice but not commercial invoice. All other terms and conditions have been met. What action should the negotiating bank take?

  (1)( )Reject the documents as non - complying.

  (2)( )Refer to the issuing bank for authority to pay.

  (3)( )Return the documents for amendment by the beneficiary.

  (4)( )Pay the documents as fully complying with the terms of the credit.