A solutions architect has created a new AWS account and must secure AWS account root user access. Which combination of actions will accomplish this? (Choose two.)

1. Ensure the root user uses a strong password.
2. Enable multi-factor authentication to the root user.
3. Store root user access keys in an encrypted Amazon S3 bucket.
4. Add the root user to a group containing administrative permissions.
5. Apply the required permissions to the root user with an inline policy document.