A Brother Calls to Speak to His Sister Who Has

A brother calls to speak to his sister who has been admitted to the psychiatric unit.The nurse connects him to the community phone and the sister is summoned.Later the nurse realizes that the brother was not on the client's approved call list.What law has the nurse broken?

A) The National Alliance for the Mentally Ill Act
B) The Tarasoff Ruling
C) The Health Insurance Portability and Accountability Act
D) The Good Samaritan Law