An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and the eyepiece is 36 cm and the final image is formed at infinity. The focal length `f_(0)` of the objective and the focal length `f_(0)` of the eyepiece are
A. `f_(o) = 45 cm` and `f_(e) = – 9 cm`
B. `f_(o) = 7.2 cm` and `f_(e) = 5 cm`
C. `f_(o) = 50 cm` and `f_(e) = 10 cm`
D. `f_(o) = 30 cm` and `f_(e) = 6 cm`
