This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Considerations - Infectious Diseases, Subject name: Pediatrics
In which disease a generalized papular rash, fever, conjunctivitis & lesion on buccal mucosa shown below are seen? 
Select and explain. 
A. Mumps, B. Measles, C. Chickenpox, D. Rubella
B: Measles
Answer: B: Measles 
Explanation: b. MeaslesA red lesion with a whitish spot on buccal mucosa, suggestive of Koplik's spot, along with a papular rash, fever & conjunctivitis, suggest a diagnosis of Measles