You are testing newly purchased Cisco Wireless IP Phones on your wireless network on the 5 GHz band. You notice that the

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You are testing newly purchased Cisco Wireless IP Phones on your wireless network on the 5 GHz band. You notice that there are audio gaps during roaming.
Troubleshooting network engineers find out that the issue is caused by the use of Dynamic WEP on the SSID. Why is this use a problem?

A. Dynamic WEP is incompatible with the Cisco Wireless IP Phones.
B. Dynamic WEP requires a full authentication with the RADIUS server during roaming.
C. Dynamic WEP provides the same WEP key to several phones simultaneously, which can cause delays if a phone needs to wait for its slot time.
D. Dynamic WEP requires use of 2.4 GHz on the phones.