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 9 yr old child came to the dental clinic with spacing in
anterior teeth. The line of treatment is 
Select and explain. 
A. Fixed appliance, B. Removable appliance, C. Inclined plane, D. No treatment, observation of patient
D: No treatment, observation of patient
Answer: D: No treatment, observation of patient 
Explanation: None