How can the domain’s zone apex for example “myzoneapexdomain com” be pointed towards an Elastic Load
Balancer?

A.
By using an AAAA record

B.
By using an A record

C.
By using an Amazon Route 53 CNAME record

D.
By using an Amazon Route 53 Alias record

Explanation:
http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-nonalias.html