The scope should be broken down into smaller components for an effective work breakdown structure $($WBS$).$ Which of the following describes how far to decompose the scope?

Question $7$ options:

Until only one $(1)$ person is needed to do the work

Until it is useful for realistic estimations

Until only a $4$ to $5-$person team is needed to do the work

Until it expands to more levels than fits on one $(1)$ page