Refer to the exhibit. ISP-X customers must be able to reach both ISP-Y and ISP-Z, but ISP-X must not allow transit traffic between ISP-Y and ISP-Z at any time Which two options satisfy this requirement? (Choose two.)
A. Use the MED to prefer the proper routes
B. Use communities to identify and filter routes.
C. Use local preference to prefer the routes
D. Use a route map to filter routes on the AS number.
E. Use the atomic aggregate attribute
