According to Oracle documentation, it is a best practice when planning and instituting Access Controls for your Autonomous Dedicated environment regarding Subnets, Compartments and User Groups. Which statement is true? (Choose the best answer.) 

Answer options:

A. Create at least 2 of each resource.
B. Only 1 Subnet and 1 Compartment are allowed, multiple Groups highly advised.
C. Only 1 of each is allowed to be allocated per environment.
D. Create a Separate VCN that contains only public subnets.

A

Reference: https://docs.oracle.com/en/cloud/paas/autonomous-database/atpfg/plan-and-create-access-constraints1.html