How does a product owner interact with the rest of the Scrum Team during the Sprint, according to the material a CSPO course covers?

• AThey stay available throughout for questions, clarification and renegotiation of scope, participate in refinement, and attend the Sprint Review and Retrospective as a member of the Scrum Team.
• BThey step back after Sprint Planning and return at the Sprint Review, so the Developers are not disturbed.
• CThey run the Daily Scrum and collect status from each developer.
• DThey attend only the Daily Scrum, since that is where blockers are raised.