Initially, for the circuit shown, the switch S is open and the capacitor voltage is 150…

Initially, for the circuit shown, the switch S is open
and the capacitor voltage is 150 V. The resistance and
capacitance are 1.2 M? and 34 µF respectively.
The switch S is closed at time t = 0. In Figure,
the charge in µC on the capacitor, when the current in the
circuit is 15 µA, is: