This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Pathology
[{'content': 'Flask shaped ulcers intestine caused by which of the following? \nSelect and explain. \nA. Typhoid, B. TB, C. Entamoeba histolytica, D. Giardia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Infection Ulcer Typhoid Longitudinal ulcer TB Transverse ulcer Entamoeba Histolytica Flask shape ulcer Broad base ulcer(flask shape ulcer) is seen in entamoeba histolytica. Giardia is a noninvasive cause of malabsorption.', 'role': 'assistant'}]