AWS Certified Advanced Networking - Specialty (#25)

Your organization’s corporate website must be available on www.acme.com and acme.com.

How should you configure Amazon Route 53 to meet this requirement?

Configure acme.com with an ALIAS record targeting the ELB. www.acme.com with an ALIAS record targeting the ELB.
Configure acme.com with an A record targeting the ELB. www.acme.com with a CNAME record targeting the acme.com record.
Configure acme.com with a CNAME record targeting the ELB. www.
acme.com with a CNAME record targeting the acme.com record.
Configure acme.com using a second ALIAS record with the ELB target. www.acme.com using a PTR record with the acme.com record target.