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
Tibial fracture with >1 cm wound, slight conjunction and moderate crushing is - 
Select and explain. 
A. Grade I, B. Grade II, C. Grade III A, D. Grade III B
B: Grade II
Answer: B: Grade II 
Explanation: Compound fracture

Compound fracture also called open fracture, in which fracture communicates with the external environment, i.e., overlying soft tissue coverage (skin and muscles) is breached.
Open fractures are typically caused by high energy injuries such as car crashes, falls, or sports injuries.
Gustila and Anderson classified open fracture into following types.