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 complains of recurrent pain over right maxillary posterior tooth but clinically no caries can be found. He also reports of cold and fever spells. What should be advised to the patient? 
Select and explain. 
A. Extract the primary retained tooth i.e., 54, 55, B. Extract the tooth 16, 54, 55, C. Refer to physician for the evaluation of maxillary sinus, D. Do nothing
C: Refer to physician for the evaluation of maxillary sinus
Answer: C: Refer to physician for the evaluation of maxillary sinus 
Explanation: None