Which option is the proper syntax of the nslookup comma…

Which option is the proper syntax of the nslookup command in the Cisco ESA CLIto list mail
exchangers for domain “cisco.com”?

A.
nslookup -d cisco.com -t mx

B.
nslookup cisco.com mx

C.
nslookup mx cisco.com

D.
nslookup -type=mx cisco.com