A

language

language is defined as a set of strings. It is another fundamental concept in CS $420.$

Which of the following is a set:

$($Select all that apply$)$

The following checkbox options contain math elements, so you may need to read them in your screen reader's $$reading$$ or $$browse$$ mode instead of $$forms$$ or $$focus$$ mode.

Choice $1$ of $4$:the empty string

$$

$\backslash$epsi $($a string of zero characters$)$

Choice $2$ of $4$:the empty language $($a language containing no strings$)$

Choice $3$ of $4$:a language that contains only the empty string

Choice $4$ of $4$:any language