This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
An army recruit, smoker and 6 months into training started complaining of pain at posteromedial aspect of both legs. There was acute point tenderness and the pain was aggravated on physical activity. The most likely diagnosis is: 
Select and explain. 
A. Buerger's disease, B. Gout, C. Lumbar canal stenosis, D. Stress fracture
D: Stress fracture
Answer: D: Stress fracture 
Explanation: (d) Gout- The hallmark physical finding is focal bone pain (tenderness) with palpation and stress. Also bilateral goes in favor of stress fracture.