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: Anaesthesia
The latest AHA 2010 for CPCR in basic life suppo by two individuals for cardiac external massage & ventilation in adult is? 
Select and explain. 
A. 30-2, B. 15-1, C. 15-2, D. 30-1
A: 30-2
Answer: A: 30-2 
Explanation: Ans. is 'a' i.e., 30-2