Which of the following italicized parts serves as an appositive？A．The next man to come was

Which of the following italicized parts serves as an appositive？

A．The next man to come was Joey.

B．Their decision to leave was very annoying.

C．It was a bad day for us to call.

D．The nurse has five children to look after.

请帮忙给出正确答案和分析，谢谢！