A project manager is leading an agile project where the team has been consistently missing sprint commitments. Analysis shows that the team tends to overcommit during sprint planning and underestimate the complexity of user stories. The team wants to improve their commitment reliability. Which TWO actions should the project manager recommend?

Reduce sprint duration to make commitments more manageable

Implement story point estimation with team consensus to improve estimation accuracy

Have the product owner make capacity decisions to reduce team overcommitment

Use historical velocity data to guide future sprint capacity planning

Add buffer time to all user story estimates to account for complexity

Assign story estimation to the most experienced team members only