Which of the Following Statements About Sado-Mascochism Is False

Which of the following statements about sado-mascochism is false?

A) It is the submissive partner who uses a safe word when his or her limit has been exceeded.
B) There is no evidence that sado-masochists have greater difficulty than other people in forming intimate relationships.
C) For some sado-masochists, arousal is derived from the ritual of control rather than the infliction of physical pain.
D) Research indicates that most sado-masochists have diverse forms of mental illness.