A. 1. Use the default configuration for one project you need to manage.
2. Use gcloud init to update the configuration values when you need to work with a non-default project.

B. 1. Use the default configuration for one project you need to manage.
2. Activate the appropriate configuration when you work with each of your assigned GCP projects.

C. 1. Create a configuration for each project you need to manage.
2. Use gcloud init to update the configuration values when you need to work with a non-default project

D. 1. Create a configuration for each project you need to manage.
2. Activate the appropriate configuration when you work with each of your assigned GCP projects.