In which of these sentences does the italicized pronoun refer to the person
speaking?
A. You must have left your wallet at home.
B. Everyone knows that umbrella is mine.
C. They must have gotten lost.
D. She was not sure which way to turn.

Is there more to this?

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Check the profile and see if there is a report button, if not they will problem not know that it is you. or the changing your name and sending a message

The police officer,x station,y road,citysubject (application to register f.i.r for stolen bicycle)sir,this is x (your name) from (your address) .it is to bring to your kind notice that my bicycle is stolen today i.e on 8th march, 2017 from outside of my residencethe details of my bicycle is that, it is 7 months old bicycle with color black and of full size.kindly, register f.i.r so that the guilty be punished you,yours faithfully,x(your name)y (your address)x(current date)