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: Pathology
Yellowish discoloration of teeth is seen in children fed
on: 
Select and explain. 
A. High-protein diet, B. Tetracyclines, C. Penicillins, D. Erythromycin
B: Tetracyclines
Answer: B: Tetracyclines 
Explanation: None