This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
All are the features of absence seizures except 
Select and explain. 
A. Usually seen in childhood, B. 3-Hz spike wave in EEG, C. Postictal confusion, D. Precipitation by hyperventilation
C: Postictal confusion
Answer: C: Postictal confusion 
Explanation: The postictal state is the altered state of consciousness after an epileptic seizure. It usually lasts between 5 and 30 minutes, but sometimes longer in the case of larger or more severe seizures, and is characterized by drowsiness, confusion, nausea, hypeension, headache or migraine, and other disorienting symptoms Ref Harrison20th edition pg 2567