What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?

Question:
What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?

• The type field 0x806 appears in the header of the Ethernet frame.
• The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
• Entries in an ARP table are time-stamped and are purged after the timeout expires.
• The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

Exam with this question: Modules 8 – 10: Communicating Between Networks Exam Answers