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
"Shivering" is observed in the early part of the postoperative period due to: 
Select and explain. 
A. Chloroform, B. Halothane, C. Trichloroethylene, D. Ether
B: Halothane
Answer: B: Halothane 
Explanation: Post-operative shivering (halothane shakes) and hypothermia are maximum with halothane. Pethidine is used for the treatment of this condition.