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: Unknown
The disease diagnosed from the following CT follows an attack of: 
Select and explain. 
A. Measles, B. Varicella, C. Mumps, D. Rubella
A: Measles
Answer: A: Measles 
Explanation: SSPE as not a common but rare complication of measles (Febrile convulsions, Encephalitis and SSPE are rare complications)