Which statements about accretion of territory are NOT correct?

A、It refers to the physical change of the territory of a state by the enlargement of land.;

B、It refers to the artificial change of the territory of a state such as constitution of artificial island or other installation.;

C、New land emerging within the territory of a state will undoubtedly constitute a part of the territory of the state.;

D、Artificial Island constructed by a state in the high seas will undoubtedly consistent a part of the territory of the state