You need to ensure that survey customers are automatically notified when their survey results are available. You must also ensure that customers can manage their own recipient lists. Which two actions should you perform?（）

A.Create a Subscription Management interface that will allow customers to modify their recipient lists. B.Create a custom Notification Services Content Formatter to send an e-mail message to customers when their survey results are available. C.Create a custom Notification Services Event Provider to send an e-mail message to customers when their survey results are available. D.Create a Notification Services custom delivery protocol to send an e-mail message to customers when their survey results are available. E.Create Notification Services Event rules to send an e-mail message to customers when their survey results are available.