Which yum repository configuration file has the correct entries to use this image as a local repository?

You have mounted an Oracle Linux 6 ISO image (v33411-01.iso) on your system in the
/mnt/iso/OL6u3/Server directory. You want to use this image in your local yum repository
configuration file and enable it. Which yum repository configuration file has the correct
entries to use this image as a local repository?

A.
[ol6u3_base_media] name=Oracle Linux 6 Media baseurl=file:///mnt/iso/V33411-01.iso
gpgcheck=1 enabled=1

B.
[ol6u3_base_media] name=Oracle Linux 6 Media baseurl=file:///mnt/iso/OL6u3/Server
gpgcheck=1 enabled=1

C.
[ol6u3_base_media] name=Oracle Linux 6 Media baseurl=http:///mnt/iso/OL6u3/Server
gpgcheck=1 enabled=1

D.
[ol6u3_base_media] name=Oracle Linux 6 Media baseurl=file:///mnt/iso/OL6u3/Server
gpgcheck=1 enabled=0