Why does the author mention the "Italian city of Palermo" in the passage？A．It had a popula

Why does the author mention the "Italian city of Palermo" in the passage？

A．It had a population that spoke several different languages.

B．Its artists and intellectuals were famous both in the north and south.

C．Its commerce made it richer than a large northern country.

D．It was a relatively small and unimportant Mediterranean state.

请帮忙给出正确答案和分析，谢谢！