Choose the answer below that is complete and free of fragments.
A. When they got home from vacation. They realized a pipe had sprung a leak and flooded the basement.
B. They got home from vacation. When they realized a pipe had sprung a leak and flooded the basement.
C. When they got home from vacation, they realized a pipe had sprung a leak. And flooded the basement.
D.
When they got home from vacation, they realized a pipe had sprung a leak and flooded the basement.