What is the purpose of base and limit registers?

A.
Countermeasure buffer overflows

B.
Time sharing of system resources, mainly the CPU

C.
Process isolation

D.
TCB enforcement

Explanation:
C: The CPU has base and limit registers that contain the starting and ending memory addresses a process is allowed to work within. This ensures the process is isolated from other processes in that it cannot interact with another processs memory segment.