What is Winifred trying to find out？A．What chemicals tears are composed of.B．Whether cryin

What is Winifred trying to find out？

A．What chemicals tears are composed of.

B．Whether crying really helps us feel better.

C．Why some people tend to cry more often than others.

D．How tears help people cope with emotional problems.

请帮忙给出正确答案和分析，谢谢！