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 of the following drugs is contraindicated in liver dysfunction? 
Select and explain. 
A. Pefloxacin, B. Vancomycin, C. Amikacin, D. Hydralazine
A: Pefloxacin
Answer: A: Pefloxacin 
Explanation: Ans. is 'a' i.e., Pefloxacin