If a ship at the time when the International Ballast Water Management Certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the Certificate.When the renewal survey is completed, the new Certificate shall be valid to a date not exceeding five years ______.
选项：

A:from the date of issued of the existing Certificate before the extension was granted.
B:from the date of issued of the existing Certificate after the extension was granted.
C:from the date of expiry of the existing Certificate before the extension was granted.
D:from the date of expiry of the existing Certificate after the extension was granted.