You are the Organization Admin for your company. One of your engineers is responsible for setting up multiple host projects across multiple folders and sharing subnets with service projects. You need to enable the engineer's Identity and Access Management (IAM) configuration to complete their task in the fewest number of steps. What should you do?

A. Set up the engineer with Compute Shared VPC Admin IAM role at the folder level. B. Set up the engineer with Compute Shared VPC Admin IAM role at the organization level. C. Set up the engineer with Compute Shared VPC Admin IAM role and Project IAM Admin role at the folder level. D. Set up the engineer with Compute Shared VPC Admin IAM role and Project IAM Admin role at the organization level.