While in the Dayroom,one of the Patients Becomes Very Agitated

While in the dayroom,one of the patients becomes very agitated and begins to threaten to harm the other patients and is directing violence at the other patients and staff.Appropriate nursing implementations include:

A) Decreasing the stimuli, and using restraints if all other measures fail.
B) Offering to call the physician, and asking another staff member to call security.
C) Removing harmful objects, and trying to perform relaxation exercises with the patient.
D) Restraining the patient, and not allowing him or her to eat or drink anything by mouth (NPO) .