Observe the given adsorption isotherm carefully and choose the correct option

(i) These curves indicates that at a fixed temperature, there is a decrease in physical adsorption with increase in pressure.
(ii) These curves always seem to approach saturation at high pressure.
`x/m=k*p^(1//n) (n gt 1)` is generally represented by this isotherm.
(iv) These curves indicate that at a fixed pressure, there is a decrease in physcial adsorption with increase in temperature .

Options

A. (i) and (iii) only
B. (ii) and (iv) only
C. (ii), (iii) and (iv) only
D. All of these.

Answer

C