In Which of the Following Situations Is the Nurse Applying

In which of the following situations is the nurse applying the principles of the CNA Code of Ethics?  

A) The nurse maintains confidentiality of a stabbing victim who is a suspected gang member. 
B) The nurse carries out mandatory testing of pregnant women for sexually transmitted diseases. 
C) The nurse keeps information confidential when a patient shares that he wants to kill himself. 
D) The nurse reports suspected abuse of a child and illegal activity of the parents to the police.