In the event of a conflict with the duty of confidentiality, in which of the following circumstances are doctors and nurses not exempted from the duty of confidentiality:
选项：

A:Observing the duty of confidentiality to patients can be detrimental or harmful to society.;
B: Observing the duty of confidentiality to patients can be detrimental or harmful to others.;
C:Observing the duty of confidentiality to patients will make the doctors and nurses lose topics of conversation;
D:Observing the duty of confidentiality to patients can be detrimental or harmful to the patients.