Choose the letter A, B, C or D to complete the sentences with given words
Fifty stars/ the/ United States’ flag/ represent/ fifty states.
A. Fifty stars in the United States’ flag represents its fifty states.
B. Fifty stars at the United States’ flag represents its fifty states.
C. Fifty stars at the United States’ flag represent its fifty states.
D. Fifty stars in the United States’ flag represent its fifty states.