"What made the event depicted in this photograph significant?

A) It marked an opening of diplomatic relations between China and the U.S.
B) It was the first time the Chinese govt. had visited the U.S.
C) It allowed the Chinese and Americans to sign an important peace treaty.
D) It fully normalised relations between China and the U.S. "

What made the event depicted in this photograph significant A It marked an opening of diplomatic relations between China and the US B It was the first time the class=