A Woman 16 M in Height Wants a Plane Mirror So That

Multiple Choice

A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is

A) 0.4 m.
B) 0.8 m.
C) 1.6 m.
D) 3.2 m.
E) impossible to say without knowing the viewing distance.