Which equation represents Freundilisch adsorptoon isotherm ( physical adsorpton is basis is of this theory) ?
A. ` x/m = K (P)^(1)` were x is amountg of gas asorbed on mass `m` at pressure `P`
B. `log x/m `=log K + 1/n log P
C. ` x/m = KP` at low pressure and `x/m = K` at hight pressure
D. all of these
