Which of the following functions in Python would you use when conducting an unpaired two$-$sample t$-$test with unequal variances?

Group of answer choices

st$.$ttest$\_$ind$($variable A$,$ variable B$,$ equal$\_$var$=$False$)$

st$.$ttest$\_$ind$($variable A$,$ variable B$,$ equal$\_$var$=$True$)$

st$.$ttest$\_$rel$($variable A$,$ variable B$,$ equal$\_$var$=$True$)$

st$.$ttest$\_$rel$($variable A$,$ variable B$,$ equal$\_$var$=$False$)$