In the given figure, a square metal loop of side 4.00 cm and resistance 5.00 Q moves to the right (+x-direction) into, through, and out of a 6.00-cm-wide region of uniform magnetic field perpendicular to the plane of the loop. The magnetic field in the region is 0.250 T. At t= 0, the loop just begins to enter the region of magnetic field. The loop moves at a constant 1.00 cm/s. Which of the following correctly plots the graph of the external force applied to the loop (to keep it moving at constant velocity) as a function of time? 1 d Applied force to loop 300 200- 100 time, s -2 4 6 10 12 00 2. force, nN Applied force to loop 300- 200- 100 time, s -2 4 6 8 10 12 force, nN Applied force to loop 300 200 100 time, s -2 4 10 12 00 2. force, nN Applied force to loop 300- 200- 100 time, s -2 4 8 10 12 6 2. force, nN