Which two of the following are appropriate choices for mainframe IP connectivity? (Choose two.)

A.
OSA mainframe ports that are attached directly to aggregation switches

B.
OSA mainframe ports that are attached to Cisco Catalyst 7500 Series Routers with ESCON cards

C.
OSA mainframe ports that are attached to Cisco Catalyst 6500 Series Switches with ESCON cards

D.
ESCON mainframe ports that are attached to Cisco Catalyst 7200 Series Routers with ESCON cards

E.
ESCON mainframe ports that are attached to Cisco Catalyst 6500 Series Switches with ESCON cards