Identify the choice that best answers the question. In which sentence are two common nouns and two proper nouns underlined?

A. Every August, Ethan and his sister spend a week at computer camp.
B. The Golden Gate Bridge connects northern California to the peninsula of San Francisco.
C. Virginia Hamilton's novels and folk tales often focused on the heritage of African Americans.
D. My brother Andy, who spent a semester in France last year, really loved Paris.