Bill Is the Biological Son of Ed and Marilyn, Who

Bill is the biological son of Ed and Marilyn, who divorced when Bill was three years old.For two years, Bill and Marilyn lived alone.Then, when Bill was five, Bill and Marilyn moved in to Jeff's home with Jeff and his three children when Jeff and Marilyn got married.In order, Bill's family type changed from

A) natural to single-parent to blended.
B) traditional to single-parent to extended.
C) nuclear to blended to extended.
D) natural to blended to extended.