You are designing an application for use only during business hours. For the minimum viable product release, you'd like to use a managed product that automatica...

You are designing an application for use only during business hours. For the minimum viable product release, you'd like to use a managed product that automatically `scales to zero` so you don't incur costs when there is no activity.
Which primary compute resource should you choose?

A. Cloud Functions B. Compute Engine C. Google Kubernetes Engine D. AppEngine flexible environment