Solve it please

Solve it please Reading of an ideal voltmeter in the circuit below is IQ (1) Zero

Dear student,

Cells in series so  will add up.  Resistance in lower arm also in series. Applying Kirchoff's law
i(2+1) =6-3
3i=3
i=1A
Voltage drop = 2V 
Net voltage = 6-2 =4V


Option 3 is correct
Regards