Which device can be plugged into an Aruba AP to enable this management?

A network engineer wants to enable remote beacon management so that an Aruba AP can manage battery-powered beacons.

Which device can be plugged into an Aruba AP to enable this management?
A . sensor
B . battery-powered beacon
C . USB beacon
D . USB Wi-Fi adapter

Answer: A

Explanation:

Reference: http://www.arubanetworks.com/products/location-services/aruba-beacons/