A barometer consists of an open reservoir of liquid with density \(\rho\) and an inverted vertical cylindrical tube of uniform cross-sectional area \(A\). The space inside the tube above the liquid column is evacuated such that the pressure there is zero, and the surface of the liquid in the open reservoir is exposed to atmospheric pressure \(P_0\). The entire apparatus is mounted inside an elevator cab that accelerates vertically upward with a constant acceleration of magnitude \(a_0\). In terms of \(P_0\), \(\rho\), \(g\), and \(a_0\), which of the following expressions represents the height \(h\) of the liquid column above the reservoir surface?