Two wires of same material have radius in the ratio 2 : 1 and length in the ratio 1 : 2.If equal force is applied on them then ratio of stress is

Question

$\begin{array}{1 1}(A)\;4 : 1\\(B)\;2 : 1\\(C)\;1 : 2\\(D)\;1 : 4\end{array} $