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: Pathology
The given pattern of electrophoresis is obtained in which of the following? 
Select and explain. 
A. Necrosis, B. Apoptosis, C. Necroptosis, D. Free radical injury
B: Apoptosis
Answer: B: Apoptosis 
Explanation: Image shows step ladder pattern. It is seen in apoptosis. It is due to action of endonuclease on nuclear DNA.