Which of the following record types in Route53 is used for IPv6 addresses?

Answer options:

A.A
B.AAAA
C.CNAME
D.PTR

Answer - B
The value for a AAAA record is an IPv6 address in colon-separated hexadecimal format
For more information on the resource record types in Route53, please refer to the below URL:
http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/ResourceRecordTypes.html