【单选题】An International Oil Pollution Prevention Certificate (IOPP) for a 'new' vessel ceases to be valid if _____.
A.
it exceeds 3 years from date of issue
B.
an alteration approved by the Captain of the Port is made
C.
an intermediate survey has not be conducted within 12 months from the date that the IOPP was issued
D.
the vessel is transferred to the flag of another country