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
In Monteggia fracture, which is true about ulnar fracture and head of radius 
Select and explain. 
A. Both ulnar fracture and head of radius is displaced posteriorly, B. Both ulnar fracture and head of radius is displaced anteriorly, C. Ulnar fractures is posteriorly and head of radius is displaced anteriorly, D. Ulnar fracture is anteriorly and head of radius is displaced posteriorly
B: Both ulnar fracture and head of radius is displaced anteriorly
Answer: B: Both ulnar fracture and head of radius is displaced anteriorly 
Explanation: B i.e. Both ulnar fracture and head of radius is displaced anteriorly