[单选题]
An object is placed 40xc9c 9g.ugk 4+m zw-a2n r2ys01me ddz c .io rx97hwp)tm in front of a 20 cm focal length converging lens. How far is the image of this object frhp .7r)xt9oiwom the lens?
A. $40 \; cm$
B. $20 \; cm$
C. $13 \; cm$
D. none of the given answers
