Scenario: A Citrix Engineer is configuring email-based discovery for the mycompany.com domain. After
creating a DNS service record the engineer would like to test that it has been implemented correctly.
Which command should a Citrix Engineer execute to validate a DNS service record after it has been created?

A.
nslookup -type=a _CitrixReceiver._udp.mycompany.com

B.
nslookup -type=srv _CitrixReceiver._tcp.mycompany.com

C.
nslookup -type=mx _CitrixReceiver._udp.mycompany.com

D.
nslookup -type=cname _CitrixReceiver._tcp.mycompany.com