All Route 53 Alias options greyed out

When trying to create a new Route 53 record and enabling Alias, all options under "Route traffic to" except for "another record in this hosted zone" are greyed out and unavailable to select. I am trying to point a CNAME to my active ELB, but cannot select "Alias to Application and Classic Load Balancer"

Any reason all the options would be disabled? Account permissions? Security settings?