Two infinitely long straight wires lie in the xy-plane along the lines x = R. The wire located at x = +R carries a constant current I, and the wire located at x = -R carries a constant current I2. A circular loop of radius R is suspended with its centre at (0, 0, 3R) and in a plane parallel to the xy-plane. This loop carries a constant current I in the clockwise direction as seen from above the loop. The current in the wire is taken to be positive if it is in the + direction. Which of the following statements regarding the magnetic field B is (are) true? (A) If I=I, then B cannot be equal to zero at the origin (0, 0, 0) (B) If I >0, and I