A College Student Is Examined at the Emergency Department; He

A college student is examined at the emergency department; he is disoriented with a fever, intense headache, stiff neck, vomiting, and sensitivity to light.His friends say that he has been sick for about 2 days and that his condition worsened over the last 3 hours.The physician does a complete blood count (CBC) and electrolytes.The electrolytes are normal, but the patient's white blood count (WBC) is 12,000 cells/L.What test should the physician order next?

A) Urinalysis and urine culture
B) Stool Gram stain and culture
C) Cerebrospinal fluid Gram stain and culture
D) Blood cultures ´ 3