An Engineer Configured a New Network Identity in Cisco Umbrella

An engineer configured a new network identity in Cisco Umbrella but must verify that traffic is being routed through the Cisco Umbrella network. Which action tests the routing?

A) Ensure that the client computers are pointing to the on-premises DNS servers.
B) Enable the Intelligent Proxy to validate that traffic is being routed correctly.
C) Add the public IP address that the client computers are behind to a Core Identity.
D) Browse to http://welcome.umbrella.com/ to validate that the new identity is working.