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: Medicine
All of the following are characterisitic features of petitmal siezures except - 
Select and explain. 
A. Short duration of seizures, B. Absence of motor activity during the seizures, C. On set after the age of 14 years, D. 3 Hz spike and wave pattern in EEG
C: On set after the age of 14 years
Answer: C: On set after the age of 14 years 
Explanation: None