The correct answer is B. The switch does not have enough PoE budget per port. The HPE Aruba Networking 580EX Series access point requires appropriate power to boot and illuminate its LEDs. HPE Aruba Networking documentation states that the 580EX Series supports 802.3bt Class 6 power or AC power. A standard HPE Aruba Networking CX 6000 48G 4SFP switch, such as the R8N86A model, is a non-PoE switch; the PoE-capable version is identified separately as the CX 6000 48G Class 4 PoE 4SFP 740W switch. Even when using a PoE-capable CX 6000 model, Class 4 PoE provides up to 30W per port, while the AP requires 802.3bt Class 6 or AC power for normal operation. Therefore, if the AP has no lights, the most likely cause from the options is insufficient or unavailable PoE power from the switch port. A wrong VLAN, missing STP configuration, or failure to connect to HPE Aruba Networking Central would not normally prevent the AP from receiving power and showing LEDs.