Some of the legacy systems in an organization are rring old versonsofthewindowsOSand oiters wenrvrng Lru 058 * running the latest release of the Windows OS. The systems are not running any legacy custom appkcations The organcations Chef CIO) wishes to unify all systems to reduce cost and enhance the security posture of the orgarization wthoud oing dta or cngd Which of the following would be the BEST course of action to take? OA Reconfigure all existing machines to have the latest release of Windows Os OBRestore all machines to default configurations O C Upgrade part of the legacy systems' nfrastructure and perform Spdtes OD. Treat all legacy machines as end-of-lfe systems and replace them