This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Drug of choice for intractable hiccups - 
Select and explain. 
A. Promethazine, B. Chlorpromazine, C. Scopolamine, D. Clozapine
B: Chlorpromazine
Answer: B: Chlorpromazine 
Explanation: Answer- B. ChlorpromazineHiccups are repeated spasmodic involuntary contractions ofthe diaphragm that occur when you inhale.Persistent or Intractable Hiccups:-i) Chlorpromazine - Drug of choice ii) Baclofen iii) Diphenylhydantoiniv) Valproic acid v) Amitriptyline vi) Metoclopromide