To Reduce the Incidence of Postural Hypotension in a Patient

To reduce the incidence of postural hypotension in a patient with a spinal cord injury,the nurse should:

A) monitor diastolic blood pressure closely.
B) encourage the patient to sit in wheelchair in upright position.
C) raise the head of the bed 45 degrees before transfer to a wheelchair.
D) encourage adequate intake of fluids to expand fluid volume.