A 25-cm focal length mirror has a 3.0 cm tall object placed 20 cm in front of it. Where is the image and is it real or virtual?
a) 5 cm behind the mirror, virtual
b) 11 cm in front of the mirror, real
c) 100 cm in front of the mirror, real
d) 100 cm behind the mirror, virtual
e) 45 cm behind the mirror, virtual