In a double slit experiment , the distance between slits is increased ten times where as their distance from screen is halved , then what is the fringe width ?

Question

$\begin{array}{1 1} it\;remains\;same \\ becomes\;\large\frac{1}{10}\\ becomes \; \large\frac{1}{20} \\ becomes \; \large\frac{1}{90} \end{array} $