Which section must the consultant check before replacing the old APs with APs that are IEEE 802.11ac-capable?

A wireless network consultant must assess an existing wireless LAN controller .

Which section must the consultant check before replacing the old APs with APs that are IEEE 802.11ac-capable?
A . number of AP licenses
B . controller PSU
C . throughput capacity
D . software version

Answer: A

Explanation:

https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9100ax-access-points/nb-06-802-11ax-faq-cte-en.html