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
Which among the following drugs is NOT used orally? 
Select and explain. 
A. Lignocaine, B. Verapamil, C. Phenytoin, D. Quinidine
A: Lignocaine
Answer: A: Lignocaine 
Explanation: None