This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
[{'content': 'Commonest cause of rupture of spleen is \nSelect and explain. \nA. Chronic malaria, B. Infectious mononucleosis, C. Leukemia, D. Chronic kala azar', 'role': 'user'}, {'content': 'Answer: C \nExplanation: spontaneous splenic rupture, which remain widely accepted to date: Mechanical effect of distention secondary to leukemic infiltration of the spleen, paicularly the capsule; splenic infarct with capsular hemorrhage and subsequent rupture; Ref Davidson edition23rd pg812', 'role': 'assistant'}]