Through two parallel wires A and B, 10 and 2 ampere of currents are passed respectively in opposite direction. If the wire A is infinitely long and the length of the wire B is 2 m, the force on the conductor B, which is situated at 10 cm distance from A will be [CPMT 1988; MP PMT 1994]

• A.            \[8\times {{10}^{-5}}N\] 
• B.            \[4\times {{10}^{-7}}N\]
• C.            \[4\times {{10}^{-5}}N\] 
• D.            \[4\pi \times {{10}^{-7}}N\]