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 female patient aged 45 years has multiple non-carious lesions and c/o sensitivity. On examination deep cervical abrasions are seen in all posterior teeth. Intra oral sinus is evident w.r.t. 24 & 25. Gingival recession is present in mandibular anterior teeth with gingival inflammation and bleeding on probing.

What is the treatment required for 24 &25 
Select and explain. 
A. RCT, B. Apicectomy, C. Apexification, D. RCT followed by apical curettage
A: RCT
Answer: A: RCT 
Explanation: None