Which statement about LLDP-MED is true?

Which statement about LLDP-MED is true?
A . LLDP-MED is an extension to LLDP that operates between endpoint devices and network devices.
B . LLDP-MED is an extension to LLDP that operates only between network devices.
C . LLDP-MED is an extension to LLDP that operates only between endpoint devices.
D . LLDP-MED is an extension to LLDP that operates between routers that run BG

Answer: A

Explanation:

LLDP for Media Endpoint Devices (LLDP-MED) is an extension to LLDP that operates between endpoint devices such as IP phones and network devices such as switches. It specifically provides support for voice over IP (VoIP) applications and provides additional TLVs for capabilities discovery, network policy, Power over Ethernet, and inventory management.

Reference: http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_58_se/configur ation/ guide/swlldp.pdf