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
Following are the propeies of Biguanides, EXCEPT: 
Select and explain. 
A. Decrease hepatic gluconeogenesis, B. Not contraindicated in renal dysfunction, C. Can be used along with sulfonylureas, D. Don't stimulate insulin Release
B: Not contraindicated in renal dysfunction
Answer: B: Not contraindicated in renal dysfunction 
Explanation: Biguanides are contraindicated in patients with renal failure, congestive hea failure, alcoholism and hepatic diseases. Ref: Richard Finkel, Michelle Alexia Clark, Pamela C. Champe, Luigi X. Cubeddu (2009), Pharmacology, 4th Edition, Lippincott Williams and Wilkins Publications, United States Page 292