What did the review of global data reveal？A．Diarrhea is a common disease.B．Good sanitation

What did the review of global data reveal？

A．Diarrhea is a common disease.

B．Good sanitation led to increase in height.

C．There were many problems of poor sanitation.

D．African children live in worse sanitary conditions.

请帮忙给出正确答案和分析，谢谢！

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