Question: Which of the following statements about process management and scheduling in operating systems is correct?

A) In a preemptive scheduling algorithm, a running process can be forcibly removed from the CPU by the operating system to allow another process to run.
B) The round-robin scheduling algorithm guarantees the best average turnaround time among all scheduling algorithms.
C) In a non-preemptive scheduling algorithm, once a process is allocated the CPU, it cannot be interrupted until it voluntarily releases the CPU.
D) Multilevel queue scheduling uses a single queue for all processes and allows processes to change priority dynamically based on their execution history.