English Grammar find the error in given sentence

my apologies with /(a)being very harsh /(b)on your proposal./(c) no error/(d) - my apologies with / (a) being very harsh / (b) on your proposal./(c) no error / (d) - find the error in given sentence English Grammar in hindi,  Spot the error  question answers in hindi pdf   questions in hindi, Know About English Grammar online test English Grammar MCQS Online Coaching in hindi quiz book