<prompt> True about relative refractory period is:Response cant be generated at allDue to closure of inactive gates of sodium channalsDue to opening of potassium channalsAll  <response>: Stronge stimulus can produce response in relative refractory period Cause: it is because potassium channals are open and the membrane potential is more close to resting membrane Begins after the end of absolute refractory period Ref:Guyton and Hall textbook of medical physiology 12th edition,page number: 70 