According to the interview, which of the following is INCORRECT？A．Exercising in your 30s w

According to the interview, which of the following is INCORRECT？

A．Exercising in your 30s will make a difference.

B．Starting exercising earlier will be better.

C．Exercising can also benefit children.

D．Exercising in your 50s will not make a difference.

请帮忙给出正确答案和分析，谢谢！