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: Pharmacology
Drug of choice in Theophylline poisoning- 
Select and explain. 
A. Coisone, B. Propranolol, C. Thyroxine, D. Phenobarbitone
D: Phenobarbitone
Answer: D: Phenobarbitone 
Explanation: Ans. is 'd' i.e., Phenobarbitone o Prophylactic administration of diazepam in combination with phenytoin or phenobarbital.