Which two statements correctly describe characteristics of the PortFast feature？ （）

• A、STP will be disabled on the port.
• B、PortFast can also be configured on trunk ports.
• C、PortFast is required to enable port-based BPDU guard.
• D、PortFast is used for both STP and RSTP host ports.
• E、PortFast is used for STP-only host ports.