A —cash business J —mode of paymentB —commission receivables K —down paymentC —loan extension L —repayment guaranteeD —bank drafts M—overnight depositsE —transfer operations N —payment in advanceF —current deposits O —demand draftsG —capital account P —bank interestH —bank guarantee Q —credit card I —payment in kindExamples：(A)现金业务(C)贷款延期