Which of the following italicized phrases indicates purpose？A．We were excited to hear the

Which of the following italicized phrases indicates purpose？

A．We were excited to hear the news.

B．They ran over to welcome the guests.

C．What have I said to make you so excited？

D．The child is too young to go to school.

请帮忙给出正确答案和分析，谢谢！