Which of the following statement about the international date change line is correct?

A、Crossthedatechangelinefromeasttowest,thedateshouldbeincreasedbyoneday.;
B、Theinternationaldatechangelineisalsocalledthedateline,andthedatesonbothsidesaredifferent.;
C、Anewdayontheearthismeasuredfromthedatechangeline.;
D、Theinternationaldatechangelineisastraightline.