A team member mentions to the scrum master that the user stories are too long.

Long user stories can hinder sprint completion and value delivery. The Scrum Master should facilitate a team review of the user stories and work with the product owner to ensure the stories are right-sized and follow the INVEST principle (Independent, Negotiable, Valuable, Estimable, Small, Testable).

Option A aligns with Scrum and Agile practices of team-based refinement and collaboration with the product owner.

Option B unnecessarily involves external stakeholders.

Option C puts the burden on one team member.

Option D promotes discussion but lacks action.