What do you specify as the menu item action attribute value so it links to /admin/mycompany/mymodule/?

You are adding a new menu item to the admin backend which will link to a custom backend page. The declaration of the route:

A. action=”adminhtml/mycompany/mymodule/”
B. action=”admin/mycompany/mymodule/”
C. It is not possible without extending the adminhtml route in routes.xml
D. action=”mycompany/mymodule/”