UNIX Systems Administration

which command would return output like this:
bcexam.com has address 129.42.17.99
bcexam.com has address 129.42.18.99
bcexam.com has address 129.42.19.99
bcexam.com has address 129.42.16.99
bcexam.com mail is handled (pri=0) by ns.watson.bcexam.com

a. nslokup bcexam.com
b. dig bcexam.com
c. host bcexam.com
d. expand bcexam.com