The practitioner is operating a mobile practice room. He visits a home to give a massage to both the wife and husband. After the wife receives the massage and leaves the room, the husband says, “You don’t have to change the sheets for me.” The practitioner decides to turn both the used bottom and top sheets inside out and redness massage table. This is a violation of?
选项：

A:Personal values.
B:Ethics and sanitation.
C:Informed consent form treatment.
D:Dual relationships.