Two infinitely long straight wires lie in the xy-plane along the lines . The wire located at carries a constant current and the wire located at carries a constant current . A circular loop of radius R is suspended with its centre at and in a plane parallel to the xy-plane. This loop carries a constant current ? 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 is (are) true?