why not D? D. Configure a visible when rule, IsDocumentPrivate, to allow users to view an attachment if the rule returns as false.

Answer C https://academy.pega.com/topic/attachment-categories/v2/in/38221/38296 In paragraph "Attachment category access control" Attachment categories allow developers to manage access to the attached content. You apply a privilege and/or When Rule to an attachment category to allow or deny attachment actions to users. Use a privilege or when condition to control access to an attachment category. When you add the privilege, select the actions to allow if the user has the privilege. For each when condition, select the actions to allow if the condition is true