An XP team is notified that an important server upgrade will be delayed by six months due to budget constraints. The upgrade included several important features that their plan depended on$,$ and the delay will require two team members to spend three entire weekly cycles on a workaround. How should the team account for this?

Track the work done by the two team members separately from the rest of the project work

Update the release plan to reflect the change in the team's capacity to work on main deliverables

Use a risk$-$based spike to reduce the uncertainty

Expect the velocity to be reduced and update the release plan accordingly