Figure shows an isosceles triangle wire frame with apex angle equal to `(pi)//2`. The frame starts entering into the region of uniform magnetic field B with constant velocity v at t =0. The longest side of the frame is perpendicular to the direction of velocity. If i is the intantaneous current through the frame then choose the alternative showing the correct variation of i with time.

Options

A.
B.
C.
D.

Answer

A