问题详情

Why the Preventive Service Task Force was involved in a controversial issue in 2009？

A．Because it said that early detection of breast cancer was not accurate enough.

B．Because it warned that middle-age women are of high risk of breast cancer.

C．Because it found that early detection of breast cancer may cause some harm.

D．Because it only looked at the special age group of 40s.

请帮忙给出正确答案和分析，谢谢！