Which of the Following Is the Most Essential Fact That

Multiple Choice

Which of the following is the most essential fact that allows the IEEE autonegotiation protocol to function?

A) Cisco meets the IEEE standard for the protocol.
B) Wiring pinouts are common for 10BASE-T, 100BASE-T, and 1000BASE-T.
C) Any Ethernet device can sense the speed of a connection.
D) Cisco switch logic can determine speed and duplex for a connection.