In the circuit shown, three parallel branches connect a central node P to a common lower conductor held at ground potential (\(V = 0\text{ V}\)).

• The left branch contains an ideal battery of EMF \(\mathcal{E}_1\) in series with a resistor of resistance \(R_1\), with the positive terminal connected toward node P.
• The middle branch contains an ideal battery of EMF \(\mathcal{E}_2\) in series with a resistor of resistance \(R_2\), with the negative terminal connected toward node P.
• The right branch contains an ideal current source that delivers a constant current \(I_0\) into node P.

Which of the following is a correct expression for the electric potential \(V_P\) at node P in terms of the given quantities?