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: Physiology
All are true about local potential except 
Select and explain. 
A. Does not follow all or none low, B. Can be depolarised or hyperpolarised, C. It is proportional to stimulus strength, D. Summation not possible
D: Summation not possible
Answer: D: Summation not possible 
Explanation: Local Potential 

Proportional to stimulus strength
Does not follow all or none law
It is not propagated
Exhibits summation
Can be depolarising / hyperpolarising