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 CPR the sternum should be depressed at a rate of 
Select and explain. 
A. 1 inch per 1 second, B. 2 inch per 1 second, C. 1 inch per 5 second, D. 2 inch per 5 second
B: 2 inch per 1 second
Answer: B: 2 inch per 1 second 
Explanation: None