Question $14$

$1$ point possible $($graded$)$

Which regex expression can be used with str$\_$detect$()$ to return TRUE for every instance of the number $19?$

Select ALL that apply. Note that an answer is correct as long as it finds the number $19,$ even if it is true for other observations.

$"\backslash \backslash$d$"$

$"[3-42]"$

$"[1-20]"$

$"\backslash \backslash$d$\{3\}"$