An administrator needs to update some previously uploaded images to their Nutanix cluster. While logged into Prism Element when trying to update the images, the update is not enabled. What could be the cause of this behavior?A$.$ The files were ISO but were uploaded as disk images hence cannot be used or edited.B$.$ Images are corrupted and must be re$-$uploaded.C$.$ RBAC is configured and the administrator$$s user doesn$$t have the right privileges.D$.$ Images were imported into Prism Central.