In computer networking, network address translation (NAT) is the process of modifying network address information in datagram packet headers while in transit across a traffic routing device for the purpose of remapping a given address space into another. Which description is true about a static NAT?

A.
A static NAT uses a many to many mapping.

B.
A static NAT uses a one to many mapping.

C.
A static NAT uses a many to one mapping.

D.
A static NAT uses a one to one mapping.