Following figure shows dependence of molar conductance of two electrolytes on concentration. $\Lambda \mathop m\limits^o $ is the limiting molar conductivity.

The number of $\mathrm{\underline {incorrect} }$ statement(s) from the following is ___________

(A) $\Lambda \mathop m\limits^o $ for electrolyte A is obtained by extrapolation

(B) For electrolyte B, $\Lambda \mathop m\limits $ vs $\sqrt c$ graph is a straight line with intercept equal to $\Lambda \mathop m\limits^o $

(C) At infinite dilution, the value of degree of dissociation approaches zero for electrolyte B.

(D) $\Lambda \mathop m\limits^o $ for any electrolyte A and B can be calculated using $\lambda^\circ$ for individual ions