This coment was said by a somebody:- when one ask you that who are you it means that the person is asking about your details like e.g you are going to your friend's house and you saw the person's mum or dad and then the parent ask that who are you? Then you will say i am oluwapelumi the frend of oluwatimileyin....but in our society today if one ask who are you the person will say his or her name only and which is not like that .

And as for me i believe it's the same because when one do something and then another person came to you and said who did this,the next thing for you is to say the person's name so also goes with who are you.....
Plz add your points and what do you think.