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 4 year old child sustained a fracture in central incisor one month ago. On examination, a necrotic pulp was seen with no other pathological findings. The treatment of choice is: 
Select and explain. 
A. Watchful observation, B. Extraction followed by space maintainer, C. Pulpectomy and root canal filling with gutta percha, D. Endodontic treatment and root canal filling with ZOE
D: Endodontic treatment and root canal filling with ZOE
Answer: D: Endodontic treatment and root canal filling with ZOE 
Explanation: A 4 year old child sustained a fracture in central incisor one month ago. On examination, a necrotic pulp was seen with no other pathological ﬁndings. The treatment of choice is endodontic treatment and root canal ﬁlling with ZOE.