Which three statements are true about windows? (Choose three.)

Oracle Scheduler enforces that only one window can be open (active) at any given time - if a higher-priority window opens while another is active, the lower-priority window is closed automatically.

Consumer groups are not directly associated with windows - windows are associated with resource plans, and it is resource plans that contain and manage consumer group directives.

Windows work with job classes to control resource allocation by associating a resource plan with the window; job classes specify a resource consumer group, and the active window's resource plan governs how resources are distributed among those groups.

The database service name is not a required attribute when creating a Scheduler window - required attributes are only the window name, schedule or start/end time, duration, and optionally a resource plan.

Windows can automatically activate at scheduled times to start jobs assigned to that window or to switch the active resource plan, enabling dynamic resource allocation changes throughout the day without manual DBA intervention.