You should tell them things. It will save YOU time.
They get 100s of Calls for the job and they can't just remember everyone all they will remember is the number linked with years of experience.
So if you don't answer the question. Don't expect them to remember you or consider you. It's obvious they will remember the guy and note down that X person is ready to work for N LPA vis-a-vis you who didn't answer the question.
[Unless and Until you bring anything special on the table eg: IIT, IIM, Reference, Made good money for the business, etc.]