Which set of products should they use?

For this question, refer to the Mountkirk Games case study.

Mountkirk Games wants to set up a continuous delivery pipeline. Their architecture includes many small services that they want to be able to update and roll back quickly.

Mountkirk Games has the following requirements:

• Services are deployed redundantly across multiple regions in the US and Europe.

• Only frontend services are exposed on the public internet.

• They can provide a single frontend IP for their fleet of services.

• Deployment artifacts are immutable.

Which set of products should they use?
A . Google Cloud Storage, Google Cloud Dataflow, Google Compute Engine
B . Google Cloud Storage, Google App Engine, Google Network Load Balancer
C . Google Kubernetes Registry, Google Container Engine, Google HTTP(S) Load Balancer
D . Google Cloud Functions, Google Cloud Pub/Sub, Google Cloud Deployment Manager