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.)

• AEnsure the root user uses a strong password.
• BEnable multi-factor authentication to the root user.
• CStore root user access keys in an encrypted Amazon S3 bucket.
• DAdd the root user to a group containing administrative permissions.
• EApply the required permissions to the root user with an inline policy document.