The standard IEEE 802 format for printing
题型：单项选择题
问题：
The standard IEEE 802 format for printing （）in human-friendly form is six groups of two hexadecimal digits, separated by hyphens or colons,in transmission order, e.g. 01-23-45-67-89-ab, 01:23:45:67:89:aB.This form is also commonly used for EUI-64.
A.hard disk logical block address
B.IP address
C.mail address
D.MAC address
