If $f(x) = \log \frac{{1 + x}}{{1 - x}}$, then $f(x)$ is
If $f(x) = \log \frac{{1 + x}}{{1 - x}}$, then $f(x)$ is
- A
Even function
- B
$f({x_1})f({x_2}) = f({x_1} + {x_2})$
- C
$\frac{{f({x_1})}}{{f({x_2})}} = f({x_1} - {x_2})$
- D
Odd function
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