This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve Physiology, Subject name: Physiology
During the Repolarisation phase of Action Potential of a Neuron, which among the following takes place? 
Select and explain. 
A. Increased permeability to K+- ion, B. Decreased permeability to K+ ion, C. Increased permeability to Ca2+ ion, D. Increased permeability to Na+ ion
A: Increased permeability to K+- ion
Answer: A: Increased permeability to K+- ion 
Explanation: ANSWER: (A) Increased Permeability to K+ ionREF: See previous question for explanation