This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'All are used for the treatment of Pulmonary hypeension except \nSelect and explain. \nA. Endothelin receptor antagonist, B. Phosphodiesterase inhibitors, C. Calcium channel blockers, D. Beta blockers', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Refer kDT 6/e p 297 Vasodilators are used for the treatment of Pulmonary hypeension. Treatments include: endothelin receptor antagonists - such as bosentan, ambrisentan and macitentan phosphodiesterase 5 inhibitors - sildenafil and tadalafil prostaglandins - epoprostenol, iloprost and treprostinil soluble guanylate cyclase stimulators - such as riociguat calcium channel blockers - nifedipine, diltiazem, nicardipine and amlodipine', 'role': 'assistant'}]