问题详情

A．Research shows that most people are carrying a gene that allows the body to break down caffeine quickly.
B．Research shows that even some people have faster gene, they should limit the cups of coffee each day.
C．Drinking coffee will only do harm to people"s health.
D．People who have a slower gene should not drink coffee more than three cups a day.请帮忙给出正确答案和分析，谢谢！