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: Surgery
Gap healing, a type of primary healing having gap of 0.8 mm is healed as: 
Select and explain. 
A. Direct lamellar bone formation., B. Woven bone formation replaced by lamellar bone., C. Woven bone formation only., D. Any of the above.
B: Woven bone formation replaced by lamellar bone.
Answer: B: Woven bone formation replaced by lamellar bone. 
Explanation: None