Plotting 1/Λm against cΛm for aqueous solutions of a monobasic weak acid (HX) resulted in a straight line with y-axis intercept of P and slope of S. The ratio P/S is
[Λm = molar conductivity
Λ°m = limiting molar conductivity
c = molar concentration
Ka = dissociation constant of HX]
(A) Ka Λ°m
(B) Ka Λ°m /2
(C) 2 Ka Λ°m
(D) 1/(KaΛ°m)