This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Which pox wont grow in egg, animal cells: \nSelect and explain. \nA. Cow pox, B. Vaccinia, C. Variola, D. Molluscum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. d. Molluscum', 'role': 'assistant'}]