Which of these statements about Product Owners and Scrum Masters is correct?

$$ A$.$ Product Owners make decisions about the product while scrum masters make

decisions about the sprint.

$$ B$.$ Product Owners come from a project management background while scrum masters

come from a technical background.

$$ C$.$ Product Owners may not like Scrum masters because scrum masters might restrict the product owner from pressurizing the team to deliver features.

D$.$ Product Owners maintain the product backlog while scrum masters maintain the sprint backlog.