Two Converging Lenses, the First with Focal Length 40 Cm

Multiple Choice

Two converging lenses, the first with focal length 40 cm and the second with focal length 33¹/₃ cm, are separated by 10.0 cm. An object of height 6.0 cm is placed 20.0 cm in front of the first lens. Where is the final image formed?

A) 10 cm before the first lens
B) 50 cm before the first lens
C) 50 cm after the second lens
D) 100 cm after the second lens
E) 33¹/₃ cm after the second lens