among us owl house people tho? can someone make the server bc im on phone for this and I would get disconnected by the server. im Luz, you guys pick who you want to be you just can't be normal luz. also please answer at least if you can play

Achair of height 1 m is placed 1 m in front of a plane mirror. a girl is standing 3 m behind the chairas shown. find the minimum length of the plane mirror in order that she can see the whole imageof the chair.a. 0.50 mb. 0.75 mc. 0.80 md. 1.00 m