A magnetic field B = $B_{\circ} sin(\omega t)\hat{k}$ covers a large region where a wire AB slides smoothly over two parallel conductors separated by a distance d, as shown in the fig. The wires are in the x - y plane. The wire AB (of length d) has resistance R and the parallel wires have negligible resistance. If AB is moving velocity $\upsilon$, what is the current in the circuit?

Question

(a) The direction of current is clockwise (ie) along ABOC
(b) The direction of current is anticlockwise (ie) along ABOC
(c) The direction of current is clockwise (ie) along BOCA
(d) The direction of current is anticlockwise (ie) along BOCA