A $35 - \mathrm { mm }$ Camera Equipped with A $40 - \mathrm { mm }$

Multiple Choice

A $35 - \mathrm { mm }$ camera equipped with a $40 - \mathrm { mm }$ focal length lens is used to photograph a tree $17 \mathrm {~m}$ tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree?

A) $22 \mathrm {~m}$
B) $26 \mathrm {~m}$
C) $21 \mathrm {~m}$
D) $23 \mathrm {~m}$
E) $24 \mathrm {~m}$