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: Dental
A 12-year-old child comes to your office with a history
of long-term use of tetracycline. The anterior teeth are a mild yellowish brown. What method would you use to remove the stain? 
Select and explain. 
A. Hydrochloric acid pumice micro-abrasions, B. At home bleaching method, C. Superoxol with or without heat, D. Composite resin veneers
B: At home bleaching method
Answer: B: At home bleaching method 
Explanation: None