单选题 1分

Where a charter-party specifies the estimated time of arrival of a vessel at the port of loading, th...

Where a charter-party specifies the estimated time of arrival of a vessel at the port of loading, there is__________obligation on the shipowners to sail to there on the date on which when proceeding with all convenient speed it would normally reach the port on or about the estimated date of arrival.
  • A.an optional
  • B.a reasonable
  • C.an absolute
  • D.retaional