MHT CET Physics question

A cell of e.m.f 2 V and negligible internal resistance is connected in series with a potentiometer wire of length 100 cm. The e.m.f of the Leclanche cell is found to balance on 75 cm of the potentiometer wire. The e. m. f. of the cell is

• (A)3.5 V
• (B)2.5 V
• (C)1.5 VCorrect
• (D)0.5 V