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
In osteomyelitis, solid periosteal reaction seen in the X-ray at 
Select and explain. 
A. 1st week, B. < 2 +  hours, C. 2nd week, D. 3rd week
A: 1st week
Answer: A: 1st week 
Explanation: None