Help!!!

Question: choose the answer that best revises the sentence without changing its meaning
Sometimes one family member moved first; later the whole family was reunited together

Choices:

A) Sometimes one family moved; later they were reunited together.


B) Sometimes one family member moved and was reunited.


C) Sometimes one family member moved first; later the whole family was reunited.


D)Sometimes one family member and the whole family reunited later.