Which two actions should be performed?

You are designing a SharePoint 2010 application. You need to specify that a custom button is defined and added to the SharePoint 2010 ribbon.

Which two actions should be performed? (Each correct answer presents part of the solution. Choose two.)

A.
Create a new Content Organizer content type that defines the button.

B.
Create Feature Definition and Feature Element XML files that define the button.

C.
Use the STSADM.EXE utility to deploy the button.

D.
Use the Site Collection Features option in the Site Collection Administration group to deploy the button.