This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 1 (Protozoology), Subject name: Microbiology
[{'content': "Romana sign is seen in? \nSelect and explain. \nA. Chaga's disease, B. Kala Azar, C. Sleeping sickness, D. Fasciola", 'role': 'user'}, {'content': "Answer: A \nExplanation: Romana's sign is the classic finding in acute Chagas disease, which consists of unilateral painless edema of the palpebrae and periocular tissues. It can result when the conjunctiva is the poal of entry of T.cruzi", 'role': 'assistant'}]