Which of the following elements are presents in a Vagrant box file? (Choose two correct answers.)
A. A Vagrant guest configuration file that is used to create instances of the box.
B. Configuration files for provisioners such as Ansible.
C. The installer for the Vagrant version which is required to run the box.
D. A metadata file describing the box and its requirements.
E. A base file system image in a format supported by the provider of the box.