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
Most common site for carcinoma stomach is: 
Select and explain. 
A. Antrum, B. Fundus, C. Lesser curvature, D. Greater curvature
A: Antrum
Answer: A: Antrum 
Explanation: Answer is A (Antrum): The most common site of gastric adenocarcinoma is antrum '40% tumors are in the antrum, predominantly on the lesser curvature, 30% arise in the body and fimdus, 25% at the cardia and 5% involve the whole organ'- CSDT