What Would Be the Most Appropriate Way to Address a Pressure

What would be the most appropriate way to address a pressure sore developing on the sacrum of a patient in the ICU to prevent further deterioration?

A) Provide a special mattress for the patient.
B) Begin a regular positioning program to relieve pressure on sacrum.
C) Begin routine skin examinations to monitor the sacrum.
D) Smooth the patient's hospital gown when he or she returns to bed.