Which type of DNS entry should be created?

You are running a site that provides e-learning services to several Fortune 100 companies. This site is available at the following location:
www.appliedlearningservices.com. A new customer wants to access the same server at a new name: www.als1.com. Which type of DNS entry should be created?

A.
AAAA

B.
A

C.
MX

D.
CNAME