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Let R be the set of real numbers and the...

Let `R` be the set of real numbers and the functions`f:RrarrR` and `g:RrarrR` be defined `f(x)=x^2+2x-3` and `g(x)=x+1`. Then the value of `x` for which `f(g(x))=g(f(x))` is

A

`-1`

B

`0`

C

`1`

D

`2`

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