A Solutions Architect Has Created a New AWS Account and Must

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.)

A) Ensure the root user uses a strong password.
B) Enable multi-factor authentication to the root user.
C) Store root user access keys in an encrypted Amazon S3 bucket.
D) Add the root user to a group containing administrative permissions.
E) Apply the required permissions to the root user with an inline policy document.