In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power ( p ) and magnification ( m ) for each lens will be, respectively

1. A. p 4 and m 4
2. B. 4p and 4m
3. C. p 4 and 4m
4. D. 4p and m 4

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