This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
A young man having pheochromocytoma has BP of 188/92 mm Hg and a hematocrit of around 50%. Pulmonary function tests and renal functions are normal. His catecholamines are elevated. Which of the following drugs should not be included in the anesthesia protocol? 
Select and explain. 
A. Desflurane, B. Fentanyl, C. Halothane, D. Midazolam
C: Halothane
Answer: C: Halothane 
Explanation: * Halothane sensitizes the hea to arrhythmogenic action of catecholamines. * In pheochromocytoma, there are elevated levels of catecholamines. * Therefore, halothane should not be used in patients with pheochromocytoma.