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Two infinite sets have `m` and `n` elements. The number of subsets of the first set is `112` more than that of the second set. The values of `m` and `n` are, respectively.(a) `4, 7`(b) 7,4`(c) `4,4`(d) 7,7`

A

`m=7`

B

`n=4`

C

`m=3`

D

`n=8`

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