If $f(x) = 2x$ and $g$ is the identity function,then:

  • A
    $(fog)(x) = g(x)$
  • B
    $(g + g)(x) = g(x)$
  • C
    $(fog)(x) = (g + g)(x)$
  • D
    None of these

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Match the functions given in List-$I$ with their relevant characteristics from List-$II$.
List-$I$List-$II$
$(A)$ $\sinh x$$(I)$ Domain is $(-1, 1)$, even function
$(B)$ $\text{sech } x$$(II)$ Domain is $[1, \infty)$, neither even nor odd function
$(C)$ $\tanh x$$(III)$ Even function
$(D)$ $\text{cosech}^{-1} x$$(IV)$ Range is $\mathbb{R}$, odd function
$(V)$ Range is $(-1, 1)$, odd function
The correct answer is

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