10. The image formed in a plane mirror is __________.
A. at the same distance in front of the mirror as the object is in front of the mirror
B. at a shorter distance in front of the mirror than the distance that the object is in front of the mirror.
C. at the same distance behind the mirror as the object is in front of the mirror
D. at a shorter distance behind the mirror than the distance the object is in front of the mirror