How does utilizing namespaces in a single Cloud Pak for Data instance facilitate multi-tenancy?

How does utilizing namespaces in a single Cloud Pak for Data instance facilitate multi-tenancy?
A . By allowing unrestricted access between different namespaces
B . Ensuring there is no isolation between different tenant environments
C . Providing logical separation between different tenant environments
D . Treating all namespaces as a single entity without any differentiation

Answer: C