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
Tetracycline in children causes: 
Select and explain. 
A. Calcification, B. Missing teeth, C. Discolored teeth, D. Peg teeth
C: Discolored teeth
Answer: C: Discolored teeth 
Explanation: None