If x/m is the mass of adsorbate adsorbed per unit mass of adsorbent, P is the pressure of the adsorbate gas ,a and b are constant ,which of the following represent "Langmuir adsorption isotherm"?
A. `"log"((x)/(m))="log"((a)/(b))+(1)/(a)"log"P`
B. `(x)/(m)=(b)/(a)+(1)/(aP)`
C. `(m)/(x)=(1+bP)/(aP)`
D. `(1)/((x//m))=(a)/(b)+(P)/(a)`
