Objective question in Electric Current

In the following circuit a 10 m long potentiometer wire with resistance 1.2 ohm/m, a resistance R₁ and an accumulator of emf 2 V are connected in series. When the emf of thermocouple is 2.4 mV then the deflection in galvanometer is zero. The current supplied by the accumulator will be
a) 4 ´imes10^–4 A b) 8 ´imes10^–4 A c) 4 ´imes10^–3 A d) 8 ´imes10^–3 A