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: Anaesthesia
In a 2 months old infant undergoing surgery for biliary atresia, you would avoid one of the following anaesthetic – 
Select and explain. 
A. Thiopentone, B. Halothane, C. Propofol, D. Sevoflurane
B: Halothane
Answer: B: Halothane 
Explanation: The child with biliary atresia will have hepatic dysfunction.
Sevoflurane, thiopentone and propofol are safe in liver disease.
Halothane is not contraindicated in pre-existing liver :-

"There is no compelling evidence associated with worsening of pre-existing liver disease". 
─Morgan
"Pre-existing liver disease unrelated to halothane is not a contraindication to the use of halothane".
—Lee 13th/e 143

Though not a contraindication, halothane should be avoided in liver disease -

"Potentialy hepatotoxic drug should be avoided".
 —Lee 55