What is the acronym expansion of the UDLD feature of Cisco Nexus Operating System?

A.
UniDirectional Link Detection

B.
Unified Data Link Distribution

C.
Unified Data Loss Detection

D.
Unified Directional Link Distribution

E.
Unidirectional Data Loss Detection

Explanation:
“Unidirectional Link Detection (UDLD) is a data link layer protocol from Cisco Systems to monitor
the physicalconfiguration of the cables and detect unidirectional links.”
http://en.wikipedia.org/wiki/Unidirectional_Link_Detection