Two very thin metallic wires placed along X and Y-axis carry equal currents as shown here. AB and CD are lines at \[45{}^\circ \] with the axes with origin of axes at O. The magnetic field will be zero on the line [MP PMT 1995; CBSE PMT 1996]

• A.            AB
• B.            CD
• C.            Segment OB only of line AB
• D.            Segment OC only of line CD