问题详情

The reason why the two port cities disappeared under the waters of Mediterranean Sea is that______.
A．the two port cities were destroyed by huge earthquakes
B．the disappearance of the two port cities was caused by underwater landslide
C．rising seas and a shift in the Nile River outlet doomed the cities
D．the story didn"t tell us a definite answer请帮忙给出正确答案和分析，谢谢！