To be included in a dashboard, a Visualforce page must use a custom controller, use a standard or custom list controller, or not have a controller. You can’t add a Visualforce page with a standard controller to a dashboard.
=> B, C, E

• Option A: Use a standard controller
• You can use the standard controller provided by Salesforce for standard objects. This is a common approach for basic operations like displaying records, performing CRUD operations, and integrating with standard Salesforce functionality.
• Option D: Use a standard controller with extensions
• This allows you to use the functionality of a standard controller while adding custom logic through extensions. Extensions provide additional methods and logic to extend the standard controller’s capabilities.
• Option E: Use a custom controller
• A custom controller is a class written in Apex that provides custom logic and data to a Visualforce page. This option is used when you need full control over the page’s behavior and data processing.

Big Don is correct.
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_quick_start_basic_dashboard_components.htm

B, C and E for sore