Light is incident on a double$-$slit. The fourth bright band has an angular distance of $7\mathrm{.}0$ from the central maximum. What is the distance between the slits $($in mm$)?($Assume the frequency of the light is $5\mathrm{.}41014$Hz$.)$

Group of answer choices

$14$

$24$

$27$

$21$

$18$