To examine the Exhibit， press the Exhibit button. Using the "ps -mo THREAD" output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）

• A、 This is a uniprocessor system
• B、 The "prog" process has a nice value of 107
• C、 There are two active processors on this system
• D、 The "prog" process will only be scheduled to run on processor 0