When it comes to viability of using scrum on large projects, which of the following statements is correct?

Agile was developed for small projects and collocated teams and cannot be used on large, enterprise projects.

There will be one product owner for all the teams managing each team's product backlog

There will be one scrum master for the project regardless of the number of scrum teams

On larger, more complex projects, multiple scrum teams work in parallel.