Which firmware-update consideration distinguishes autonomous and lightweight access points?

Lightweight access points (LAPs) operate in conjunction with a Wireless LAN Controller (WLC). The WLC manages and pushes firmware updates to the connected LAPs. Therefore, remote firmware updates for LAPs are dependent on the WLC. Autonomous access points (AAPs), on the other hand, are self-contained and manage their own firmware. They can be updated individually via methods like TFTP or HTTP, without needing a WLC. The first incorrect option is wrong because neither type of AP requires redundant WLCs for upgrades, and AAPs don't use WLCs at all. The third option is incorrect; neither type of AP inherently has automatic recovery from corrupt firmware. The fourth option is also incorrect; while some devices have dual image banks, it's not a distinguishing factor between these two types of APs in general.