Refer to the exhibit.

The two connected ports on the switch are not turning orange or green. Which steps would be the most effective to troubleshoot this physical layer problem?

A.	Ensure the switch has power.
B.	Reseat all cables.
C.	Ensure cable A is plugged into a trunk port.
D.	Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
E.	Reboot all of the devices.
F.	Ensure that cables A and В are straight-through cables.