An administrator schedules downtime on a system to find out why it takes so long to boot. Which of the following commands will help the administrator determine the issue with this system?

systemd-analyze blame reports per-unit initialization timing but does not expose unit file enablement state or configuration issues that would reveal the root cause of a slow boot.

syated-analyze time is not a valid command; even the correct form systemd-analyze time returns only a high-level total boot duration, not per-unit file state details.

systemctl with the unit-files argument displays the enabled or disabled state of all systemd unit files, allowing an administrator to identify unnecessary or misconfigured services that load at boot. This view provides actionable configuration details needed to determine which services are causing the delay.

systemctl mask permanently disables a unit by symlinking it to /dev/null and is a remediation action, not a diagnostic command that provides boot performance information.