Freundlich adsorption isotherm is given by the expression $\frac{\mathrm{x}}{\mathrm{m}}={\mathrm{kp}}^{1/\mathrm{n}}$.
which of the following conclusions can be drawn from this expression?

When $\frac{1}{\mathrm{n}}=0$, the adsorption is directly proportional to pressure.

When $\mathrm{n}=0,\frac{\mathrm{x}}{\mathrm{m}}\mathrm{vs} \mathrm{p}$ graph is a line parallel to x - axis

When $\mathrm{n}=0,\text{ plot of }\frac{\mathrm{x}}{\mathrm{m}}\mathrm{vs} \mathrm{p}$ is a curve

when $\frac{1}{\mathrm{n}}=0$,the adsorption is independent of pressure