Two lenses, the first with focal length -12.5 cm and the second with focal length 20.0 cm, are separated by 15.0 cm. If an object is place 50.0 cm in front of the first lens, what is the total magnification?
A. 20.0
B. -20.0
C. 1.25
D. -1.25
E. -0.800
E. -0.800
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