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: Orthopaedics
Most common lesion of the mandible is- 
Select and explain. 
A. Ameloblastoma, B. Squamous cell ca, C. Osteosarcoma, D. Osteoclastoma
A: Ameloblastoma
Answer: A: Ameloblastoma 
Explanation: "Ameloblastoma is the most common jaw tumour" -- Radiology of head & Neck
"Ameloblastoma is the most common tumour of the maxillomandibular region. The mandible is affected in 75% of cases, the maxilla in 25%". -- Oral pathology