Which of the following is suitable as a description of the round-robin (RR) task scheduling method?
a) CPU resources are allocated at fixed time intervals in accordance with priorities of the individual tasks.
b) At fixed time intervals, a timer interrupt occurs, causing a forced transfer of control to the first task in the executable queue.
c) This method is suitable for real-time systems in which tasks must be started immediately when an interrupt event occurs.
d) This method is not suitable for operating systems designed for multiple users.