A DIV element with role role "listbox" has an aria-multiselect attribute set to "true". Two of the four child "div" elements with the role "option" have the "aria-selected" attribute set to "true".
Expose STATE_SYSTEM_SELECTED
; Expose STATE_SYSTEM_SELECTABLE
Expose STATE_SYSTEM_SELECTED and STATE_SYSTEM_SELECTABLE for each of the elements with role option
Expose IsSelected property in SelectionItem Control Pattern. The availability of the SelectionItem Control Pattern indicates the item is selectable.
Expose STATE_SELECTED on each of the elements with role option.
AXSelected:Yes on option 2 and 3 and AXSelected:No on option 1 and 4