If

colors 'red', 'orange', 'yellow', 'green', 'blue', 'violet', 'indigo'$]$

what does the following return?

colors$[2$:$5]$

$[\text{'}$yellow$\text{'},$ 'green', 'blue', 'violet', 'indigo'$]$

$[\text{'}$orange$\text{'},$ 'yellow', 'green', 'blue'$]$

$[\text{'}$orange$\text{'},$ 'yellow', 'green'$]$

$[\text{'}$yellow$\text{'},$ 'green', 'blue'$]$