Which connectivity option should be implemented?

A customer is collaborating with another company to build an application on Compute Engine. The customer is building the application tier in their GCP Organization, and the other company is building the storage tier in a different GCP Organization. This is a 3-tier web application. Communication between portions of the application must not traverse the public internet by any means.

Which connectivity option should be implemented?
A . VPC peering
B . Cloud VPN
C . Cloud Interconnect
D . Shared VPC

Answer: B