An ionized gas contains both positive and negative ions. If it is subjected simultaneously to an electric field along the +x direction and a magnetic field along the +z direction, then [IIT-JEE (Screening) 2000]

• A.            Positive ions deflect towards +y direction and negative ions towards ?y direction
• B.            All ions deflect towards +y direction
• C.            All ions deflect towards ?y direction
• D.            Positive ions deflect towards ?y direction and negative ions towards +y direction