问题详情

What can we learn from the first paragraph？

A．No medication can slow down the development of Alzheimer"s symptoms.

B．People who always complain are most likely to have Alzheimer"s disease.

C．Doctors had better tackle Alzheimer"s disease when people are 65 years old.

D．To detect Alzheimer"s disease before memory loss is crucial.

请帮忙给出正确答案和分析，谢谢！