Câu 7: AND-403: Monetize Android Applications

What is application licensing?

1. A. A method to control access to your paid application through authentication. — đáp án hiện tại
2. B. A method to provide a license key per product sold in-app.
3. C. A method to provide add license key for advertisements added to an application.
4. D. A method to add a second layer authentication to your privately hosted services.