The Basics of Open Licenses, Copyright, and Fair Use

Which three (3) of the following are key reasons why open licenses are important for OER?

Open licenses guarantee a monetary return on all content shared with them
Open licenses make it clear how others can use your work
Open licenses let us keep permissions that copyright automatically gives away
All the licenses include a requirement for attribution, or giving credit to the creator
Creative Commons (CC) licenses make it easy to share with different permissions