While Assessing a Patient in Shock Who Has an Arterial

While assessing a patient in shock who has an arterial line in place, the nurse notes a drop in the systolic BP from 92 mm Hg to 76 mm Hg when the head of the patient's bed is elevated to 75 degrees. This finding indicates a need for

A) additional fluid replacement.
B) antibiotic administration.
C) infusion of a sympathomimetic drug.
D) administration of increased oxygen.