As I mentioned above reviewer has asked me to make changes, like write down complete details about faults in the smart grid though my paper is about faults in transmission lines. My paper already has 12 pages if I add those irrelevant details it will increase the number of pages also. And another thing he has asked to merge all graphs which I think will make it too much complicated for reading. So how should I deny those changes which will not a kind of "offened" the reviewer?