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: Surgery
A 48-years-old male reported to you with fractured central incisor with fracture line extending 4 mm gingival below CEJ with thin bone buccally and thick apicopalatally, treatment of choice is: 
Select and explain. 
A. Socket shield technique, B. Post and core, C. Extraction and implant, D. Socket preservation
A: Socket shield technique
Answer: A: Socket shield technique 
Explanation: None