What kind of structure should be used to save data coming from the web form?

A customer has a requirement to create a web form that collects and stores unauthenticated users’ email, first name, last name, and color preferences to an Adobe Campaign Classic database.

The users are identified using a double opt in process only.

What kind of structure should be used to save data coming from the web form?
A . Custom attributes in recipient data schema
B . Custom data schema not linked to recipient
C . Default attributes in recipient data schema
D . Custom data schema linked to recipient

Answer: B