53. 下列何者為信用狀之非單據化條件(non-documentary conditions)？ (A)SHIPPING CO. CERTIFICATE CONFIRMING THAT THE VESSEL IS NOT MORE THAN 15 YEARS OLD (B)BENEFICIARY MUST SEND SHIPPING ADVICE TO THE APPLICANT WITHIN 2 DAYS AFTER THE SHIPMENT IS EFFECTED (C)ALL DOCUMENTS SHOULD BEAR THE NUMBER OF THIS CREDIT (D)SHIPMENT FROM KEELUNG TO HONGKONG