hi vinod ,

thank you for approaching us . during the option entry , keep the top college and the branch you want in it in the first place . do it even if you know that you donot have chances of getting that seat for your rank ,because we never know you might turn too lucky to get that . and if you had a lucky by chance to get that seat and yet you have not choosen that college then you will have to loose the chance .

similarly make the option entery from  top colleges and branches to the lesser standards colleges and branches .

all the best