`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 `F_(2)` is the force exerted by `B` on `C` choose the correct answer
A. `vec(F)_(1) = 2 vec(F)_(2)`
B. `vec(F)_(2) = 2vec(F)_(1)`
C. `vec(F)_(1) = vec(F)_(2)`
D. `vec(F)_(1) = - vec(F)_(2)`