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: Pathology
A child is diagnosed with osteosarcoma based on Sunray appearance seen on X ray.
This is because of 
Select and explain. 
A. Periosteal reaction, B. Calcification along the blood vessels, C. Calcification along the periosteum, D. Soft tissue invasion
B: Calcification along the blood vessels
Answer: B: Calcification along the blood vessels 
Explanation: None