Your team is building an application for a global bank that will be used by...

1. Create a Pub/Sub topic for each user

2 Deploy a Cloud Function that sends a notification when your model predicts that a user's account balance will drop below the $25 threshold.

1. Create a Pub/Sub topic for each user

2. Deploy an application on the App Engine standard environment that sends a notification when your model predicts that

a user's account balance will drop below the $25 threshold

1. Build a notification system on Firebase

2. Register each user with a user ID on the Firebase Cloud Messaging server, which sends a notification when the average of all account balance predictions drops below the $25 threshold

1 Build a notification system on Firebase

2. Register each user with a user ID on the Firebase Cloud Messaging server, which sends a notification when your model predicts that a user's account balance will drop below the $25 threshold