A waitress served us. She was very impolite and im...

Câu hỏi: A waitress served us. She was very impolite and impatient.

A A waitress who served us , was very impolite and impatient.

B A waitress which served us., was very impolite and impatient.

C A waitress who served us was very impolite and impatient.

D A waitress whom served us , was very impolite and impatient.