Which statement about the impact of configuring a single SSID to support TKIP and AES encryption simultaneously is true?

Which statement about the impact of configuring a single SSID to support TKIP and AES
encryption simultaneously is true?

A.
The overhead associated with supporting both encryption methods significantly degrades client
throughput.

B.
Some wireless client drivers might not handle complex SSID settings and may be unable to
associate to the WLAN.

C.
This configuration is unsupported and the Cisco Wireless Control System generates alarms
continuously until the configuration is corrected.

D.
This configuration is common for migrating from WPA to WPA2. No problem is associated with
using this configuration.