Question 2 (8 points).The MLFQ (multi-level feedback queue) is a famous scheduling discipline. It consists of a number of rules as follows. 1: If Priority (A)> Priority (B),A runs (B doesn't). 2: If Priority (A)=Priority(B),A \& B run in round-robin fashion. 3: When a job enters the system, it is placed at the highest priority queue (the topmost queue). 4: Once a job uses up its time slice at a given level, its priority is reduced. 5: After some time period, move all the jobs in the system to the top-most (highest-priority) queue. Now, write down the rule (or rules, using numbers, DO NOT need to repeat) that come into play in each of the following example traces of MLFQ behavior. Note that * marks an arrival if the information is relevant