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
[{'content': 'During cardiopulmonary resuscitation, cardiac massage is given – \nSelect and explain. \nA. Upper third of sternum, B. Mid third of sternum, C. Lower third of sternum, D. Precordiurn', 'role': 'user'}, {'content': 'Answer: C \nExplanation: During CPR in adults, chest compression (cardiac massage) is given over lower 1/3rd of sternum.', 'role': 'assistant'}]