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Let f: A rarr B and g : B rarr C be the...

Let `f: A rarr B` and `g : B rarr C` be the bijective funtions. Then `(gof)^-1` is

A

1.`f^-1og^-1`

B

2.fog

C

3.`g^-1of^-1`

D

4.gof

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