This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Most common type of shock in emergency room is 
Select and explain. 
A. Cardiogenic, B. Hypovolaemic shock, C. Obstructive, D. Neurogenic
B: Hypovolaemic shock
Answer: B: Hypovolaemic shock 
Explanation: Hypovolaemic shock is the most common form of shock