What is the recommended approach an Architect Should recommend to UC?

Containers (UC) has an existing Customer Community. UC wants to expand the self-registration capabilities such that customers receive a different community experience based on the data they provide during the registration process.

What is the recommended approach an Architect Should recommend to UC?
A . Create an After Insert Apex trigger on the user object to assign specific custom permissions.
B. Create separate login flows corresponding to the different community user personas.
C. Modify the Community pages to utilize specific fields on the User and Contact records.
D. Modify the existing Communities registration controller to assign different profiles.

Answer: C