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: Medicine
The most common site for myocardial infarction is : 
Select and explain. 
A. Left atrium, B. Left ventricle, C. Right atrium, D. Right ventricle
B: Left ventricle
Answer: B: Left ventricle 
Explanation: Answer is B (Left ventricle) The most common site of myocardial infarction is the anterior wall of Left ventricle. Anterior wall MI 1. True Anterior Wall Occlusion of Left Anterior Descending aery (LAD) 2. Anteroseptal Infarction Occlusion of Left Anterior Descending aery (LAD) 3. Anterolateral infarction Occlusion of Left coronary aery thereby causing ischemia in region supplied by LAD aery and circumflex aery (lateral wall)