A Nurse Is Working at a Suicide Prevention Hotline and Receives

A nurse is working at a suicide prevention hotline and receives a call from a man threatening to end his life. The most important thing for her to determine is whether the man has:

A) A means or a plan to commit suicide, including whether he has access to a weapon, such as a gun.
B) Been diagnosed with a mental illness.
C) A substance use disorder and is currently using alcohol or drugs.
D) None of the above.