A, B and C are parallel conductors of equal length carrying currents I, I and 2I respectively. Distance between A and B is x. Distance between B and C is also x. \[{{F}_{1}}\] is the force exerted by B on A and F2 is the force exerted by B on A choose the correct answer [Kerala PET 2001]

• A.            \[{{F}_{1}}=2{{F}_{2}}\]   
• B.            \[{{F}_{2}}=2{{F}_{1}}\]
• C.            \[{{F}_{1}}={{F}_{2}}\]     
• D.            \[{{F}_{1}}=-{{F}_{2}}\]