This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal Infections, Subject name: Orthopaedics
TB spine most commonly affects? 
Select and explain. 
A. Lumbar vertebra, B. Cervical, C. Thoracic, D. Sacral
C: Thoracic
Answer: C: Thoracic 
Explanation: ANSWER: (C) ThoracicREF: Tuberculosis of skeletol system SM tuli 3rd e p, 192Important points about skeletal TBMost commonSite: vertebralSite in vertebra: lowerthoracic or dorsolumbar Route of spread: hematogenousType: paradiscalSymptom: back pain