What action will occur if a switch receives a frame and does have the source MAC address in the MAC table?

What action will occur if a switch receives a frame and does have the source MAC address in the MAC table?

• The switch refreshes the timer on that entry.
• The switch shares the MAC address table entry with any connected switches.
• The switch does not forward the frame.
• The switch adds it to its MAC address table associated with the port number.

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