This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
[{'content': 'Which is true of trophozites of E. Histolytica - \nSelect and explain. \nA. Has eccentric Karyosome, B. Nuclear membrane with chromatin, C. Shows erythrophagocytosis, D. Presence of bacteria inside cell', 'role': 'user'}, {'content': 'Answer: B \nExplanation: TROPHOZOITE- 1.clear outer ectoplasm and granular endoplasm 2.only form present in tissues 3.karyosome present-central in position surrounded by coloured halo TEXTBOOK OF MEDICAL PARASITOLOGY,BAVEJA,3RD EDITION,PAGE NO 16', 'role': 'assistant'}]