What is the BEST way to rewrite sentence (1) to make it more coherent?

A) American flags—red, white, and blue—are waved everywhere down Peachtree.

B) Red, white, and blue is seen everywhere, and American flags are waved everywhere down Peachtree.

C) Red, white, and blue flags that represent the United States of America are waved by race spectators everywhere along the route down Peachtree Street.

D) Spectators wave American flags along Peachtree Street, and both runners and spectators alike are wearing or displaying red, white, and blue everywhere.