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In the MAC address 00:90:69:9f.ea:46, what represents t……

In the MAC address 00:90:69:9f.ea:46, what represents the Organizationally Unique Identifier (OUI)?()

A. 69:9f.ea:46
B. 00:90:69:9f
C. 9f:ea:46
D. 00:90:69