A circular coil of wire consisting of 100 times of radius $8.0\;cm$ carries a current of $0.40\;A$ What is the direction of the magnetic field B at the center of the coil ?

Question

$\begin{array}{1 1} \text{Perpendicular , inwards in the plane of paper} \\ \text{Perpendicular , outwards in the plane of paper} \\ \text{along the surface of the paper to the right side } \\ \text{along the surface of the paper to the left side }\end{array} $