Which of the following expressions is correct?

Question

$\begin{array}{1 1}\Lambda_m^{\infty}(NH_4OH)=\Lambda_m^{\infty}(NH_4Cl)+\Lambda_m^{\infty}(NaOH)-\Lambda_m^{\infty}(NaCl)\\\Lambda_m^{\infty}(NH_4OH)=\Lambda_m^{\infty}(NH_4Cl)-\Lambda_m^{\infty}(NaOH)+\Lambda_m^{\infty}(NaCl)\\\Lambda_m^{\infty}(NH_4OH)=\Lambda_m^{\infty}(NH_4Cl)-\Lambda_m^{\infty}(NaOH)-\Lambda_m^{\infty}(NaCl)\\\Lambda_m^{\infty}(NH_4OH)=\Lambda_m^{\infty}(NH_4Cl)+\Lambda_m^{\infty}(NaOH)+\Lambda_m^{\infty}(NaCl)\end{array}$