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If $f:R\to R$ is defined by $f(x)=3x-2$,then $(fof)(x)+2=$

$\begin{array}{1 1}(A)\;f(x)&(B)\;2f(x)\\(C)\;3f(x)&(D)\;-f(x)\end{array}$

$(fof)(x)+2=3f(x)$
Hence (C) is the correct answer.