Reza's Face Is 20 Cm in Front of a Concave

Multiple Choice

Reza's face is 20 cm in front of a concave shaving mirror having a focal length of magnitude 30 cm. How large is the image of his face?

A) twice as large as his face
B) half as large as his face
C) three times as large as his face
D) of the same size as his face
E) four times as large as his face