You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）

• A、IP phones require inline power and must be in separate VLAN to receive inline power
• B、IP telephony applications require prioritization over other traffic as they are more delaysensitive
• C、IP phones can only receive IP addresses through DHCP if they are in separate VLAN
• D、The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan