Which one of the following graphs between molar conductivity $\left({\mathrm{\Lambda }}_{\mathrm{m}}\right)$ versus $\sqrt{\mathrm{C}}$ is correct?

The cell potential for the following cell $\mathrm{Pt}\left|{\mathrm{H}}_2\left(\mathrm{g}\right)\right|{\mathrm{H}}^{+}\left(\mathrm{aq}\right)\left|\right|\left.{\mathrm{Cu}}^{2+}\left(0.01\mathrm{M}\right)\right|\mathrm{Cu}\left(\mathrm{s}\right)$ is $0.576 \mathrm{V}$ at $298 \mathrm{K}$. The $\mathrm{pH}$ of the solution is (Nearest integer)

(Given : ${\mathrm{E}}_{{\mathrm{Cu}}^{2+}/\mathrm{Cu}}^{\mathrm{o}}=0.34 \mathrm{V}$ and $\frac{2.303\mathrm{RT}}{\mathrm{F}}=0.06 \mathrm{V}$)

In a cell, the following reactions take place

${\mathrm{Fe}}^{2+}\to {\mathrm{Fe}}^{3+}+{\mathrm{e}}^{-} {{\mathrm{E}}^{\mathrm{o}}}_{{\mathrm{Fe}}^{3+}/{\mathrm{Fe}}^{2+}}=0.77 \mathrm{V}$

$2{\mathrm{I}}^{-}\to {\mathrm{I}}_2+2{\mathrm{e}}^{-} {\mathrm{E}}_{{\mathrm{I}}_2/{\mathrm{I}}^{-}}^0=0.54 \mathrm{V}$

The standard electrode potential for the spontaneous reaction in the cell is $\mathrm{x}\times {10}^{-2} \mathrm{V} \mathrm{at} 298 \mathrm{K}$. The value of $\mathrm{x}$ is - (Nearest Integer)