In the image, there are two nodes communicating directly, without an access point. In the packet
on the right side of the image, the Address 1 field is blank. If this packet is going to the other
computer, what is the value that must be filled in this blank address field?

A.
2345

B.
1234

C.
ABCD

D.
<null>

E.
ABCD-1234