This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
[{'content': 'Early gastric carcinoma does not include- \nSelect and explain. \nA. Involvement of the mucosa, B. Involvement of the mucosa and submucosa, C. Involvement of the mucosa, submucosa, and muscularis propria, D. Involvement of the mucosa and submucosa with lymphatic involvement', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Early gastric carcinoma does not include- muscularis propria Early gastric carcinoma is cancer limited to the mucosa and submucosa with or without lymph node involvement Japanese classification for Early gastric carcinoma:', 'role': 'assistant'}]