How do you verify connectivity between the default gateway and a WX device?

How do you verify connectivity between the default gateway and a WX device?

A.
Check the WX device remote interface and verify that the status is up.

B.
From the WX device, ping the default gateway to make sure it is reachable.

C.
In WebView, check the service tunnel status under Compression > Basic > Endpoints.

D.
In WebView, check the remote routes under Compression > Advanced > Remote Routes.