The client has returned to the surgery unit from the Post Anesthesia Care Unit (PACU). The client's respirations are rapid and shallow, the pulse is 120, and the blood pressure is 88/52. The client's level of consciousness is deteriorating. The nurse should do which of the following first?

C Call the respiratory therapist. D Call the Rapid Response Team. B Call the primary care physician. A Call the Post Anesthesia Care Unit (PACU).