A documentary credit pre-advice is issued on 1 March for USD510,000.00 with the following terms and conditions:

  - Partial shipment allowed.

  - Latest shipment date 30 April.

  - Expiry date 15 May.

  On 2 March the applicant requests an amendment prohibiting partial shipment and extending the expiry date to 30 May. In accordance with UCP 600 what MUST the issuing bank do?

  (1)( ) Clarify with the applicant the period for presentation.

  (2)( ) Issue the documentary credit as originally instructed.

  (3)( ) Issue the documentary credit incorporating all the amendments.

  (4)( ) Issue the documentary credit incorporating only the extended expiry date.