What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table（）。

• A、The switch will not forward unicast frames.
• B、The switch will forward the frame to a specific port.
• C、The switch will return a copy of the frame out the source port.
• D、The switch will remove the destination MAC from the switch table.
• E、The switch will forward the frame to all ports except the port on which it was received.