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
All of the following statements about adverse effects of tetracyclines are true, except: 
Select and explain. 
A. May lead to discolouration of teeth, B. Are a common cause of superinfections, C. May precipitate Liver damage, D. Are not known to be teratogenic
D: Are not known to be teratogenic
Answer: D: Are not known to be teratogenic 
Explanation: Tetracyclines are known to have teratogenic effects. Consumption of Tetracycline during pregnancy may cause dental enamel dysplasia and bony deformities in the child. Ref: KDT, 6th Edition, Page 714; Basic and Clinical Pharmacology By Katzung, 10th Edition, Page 748