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 drug has a favourable effect on lipid metabolism ? 
Select and explain. 
A. Atenolol, B. Chlorothiazide, C. Clonidine, D. Torsemide
C: Clonidine
Answer: C: Clonidine 
Explanation: None