What is recommended to fulfill this requirement with the least amount of customization?

An identity architect has been asked to recommend a solution that allows administrators to configure personalized alert messages to users before they land on the Experience Cloud site (formerly known as Community) homepage.

What is recommended to fulfill this requirement with the least amount of customization?
A . Customize the registration handler Apex class to create a routing logic navigating to different home pages based on the user profile.
B. Use Login Flows to add a screen that shows personalized alerts.
C. Build a Lightning web Component (LWC) for a homepage that shows custom alerts.
D. Create custom metadata that stores user alerts and use a LWC to display alerts.

Answer: B