This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology Pa-2 (RNA Virus Pa-1,2 & Miscellaneous Viruses), Subject name: Microbiology
[{'content': 'A two year old unimmunized child presents to a primary health center with fever since 5 days Mother also gives a history of rash staing behind ear-pinna a day before coming OPD. On examination, child is having running nose and congested eyes. Most probable diagnosis is: \nSelect and explain. \nA. Measles, B. Mumps, C. Rubella, D. Chicken pox', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Option 1. Points in or of Measles are: History of unvaccination. 2 years old child. Maculopapular rashes which benign behind the ears. Fever, running nose and congested eyes. Option 2: Mumps present with bilateral parotid swelling. Option 3: Rubella- rash on face with lymphadenopathy. Option 4: Chicken pox-presents with fever with vesicular rash', 'role': 'assistant'}]