This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'True about anthrax - rpt \nSelect and explain. \nA. Cause by Gram positive bacilli, B. Soil reservoir, C. Spore formation takes place, D. More common in carnivorous than herbivores', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The anthrax bacilli are one of the largest of pathogenic bacteria, which is gram-positive and non-acid fast. REF:TEXTBOOK OF MICROBIOLOGY ANANTHANARAYAN AND PANIKER SEVENTH EDITION PAGE NO:248', 'role': 'assistant'}]