2. A thin membrane separates for the given figure, two compartments A and B. In compartment A, the concentrations of K$^+$, Na$^+$, and Cl$^-$ are 120, 16, and 18 mM, respectively. In compartment B, the concentrations of K$^+$, Na$^+$, and Cl$^-$ are 4, 140, and 120 mM, respectively. The temperature is 26 $^\circ$C. Assume that you can arbitrarily and independently modify the membrane conductance for K$^+$, Na$^+$, and Cl$^-$ from 0 to infinity. What is the (maximum) range of transmembrane voltages that you can achieve by such tuning? [Hint: the range is given as: ($V_m$)$_{max}$ - ($V_m$)$_{min}$].