You are assessing a 40-year-old male with an apparent psychiatric crisis. According to the man's wife, he has a history of depression and schizophrenia and takes Zoloft and Zyprexa. A police officer is present at the scene. The patient, who is obviously scared, tells you that he sees snakes everywhere. You should:
A) Restrain the patient
B) Administer haloperidol
C) Ask the police officer to leave
D) Approach the patient calmly