A man is standing in a room and a plane mirror is fixed on the wall in fornt of him.The height of the wall is `H`.Man has to see the complete image of wall behing him at a time

When the man is at position `3`,the minimum length of the mirror required is

Options

A. `H`
B. `H//2`
C. `H//3`
D. `H//4`

Answer

D