Two long and parallel straight wires A and B carrying currents of $8.0\;A$ and $5.0 \;A$ same direction are separated by a distance of $4.0\;cm$ . What is the direction of the magnetic field on a 10 cm section of wire A?
$\begin{array}{1 1} \text{Perpendicular outwards to the plane of paper} \\ \text{Perpendicular inwards to the plane of paper} \\ \text{parallel along the surface to the right of the plane of the paper } \\ \text{along the surface of the paper to the left side }\end{array}$