The patient, female, 19 years old, was diagnosed with ectopic pregnancy due to acute abdominal pain and planned to undergo emergency surgery. The patient was accompanied by her classmate, but the patient hoped that the medical staff would not tell her classmate her actual condition. Which of the following rights did the patient hope to defend
选项：

A:Right to know;
B:Right of privacy ;
C: Right of action;
D:Right of supervision