A developer is deploying Amazon Cognito as part of a new application. The Amazon Cognito user pool domain's hosted UI must match the application's deployed domain. DNS records must be updated appropriately.
What should the developer do to meet these requirements?

A. Configure the application's domain DNS setting to use the predefined domain.
B. Configure the prefix of the Amazon Cognito domain, amazoncognito.com, in the user pool app integration. Configure the application's domain DNS setting to use this new prefix.
C. Create an AWS Certificate Manager (ACM) certificate in the us-east-1 Region. Configure the user pool's app integration domain name with the custom domain. Configure the application's domain DNS setting with the supplied alias target.
D. Create an AWS Certificate Manager (ACM) certificate in the us-east-1 Region. Configure the user pool's domain app client settings with the custom domain. Configure the application's domain DNS setting with the supplied alias target.