Which of the following sentences is INCORRECT？A．Today"s temperature is higher than yesterd

Which of the following sentences is INCORRECT？

A．Today"s temperature is higher than yesterday"s.

B．These are John"s and Tom"s desks.

C．She is the two children" mother.

D．This is England and America"s problem.

请帮忙给出正确答案和分析，谢谢！