A four$-$cylinder spark ignition engine is designed for compression ratio $4\mathrm{.}5$ with a swept volume of $0\mathrm{.}0015$ m$3.$ The stroke $($S$)$ of the engine is $\_\_\_\_\_$ if it is a square engine.

$($A$)0\mathrm{.}08$m

$($B$)0\mathrm{.}05$m

$($C$)0\mathrm{.}07$m

$($D$)0\mathrm{.}045$m