What value is stored in the variable 'index' after clicking on the 'submitButton' assuming $\text{'}4\text{'}$ is entered for letterWeightinput?

when submitButton $*$ Click $*$

do

set app variable index $*tofin$ list $4$ app variable letterWeight $*$ find first $*$ occurrence $of$ item app variable weight $*$

else

set

resultLabel

Sext $*$

to

$(5)$ Invalid letter weight, enter again. $?$

$4$

$3$

$6$

$5$

$2$

$0$

$1$

$7$