In Linux, the Iostat Command Is Run and the Following

In Linux, the iostat command is run and the following output is displayed: # iostat Linux 2.6.9-8.11.EVAL (ts3-150,ts.cn.tlan) 02/01/2014 avg-cpu: %user%nice%sys %iowait%idle 12.010.002.152.3083,54 Device: tpsBlk_read/sBlk_wrtn/sBlk_readBlk_wrtn hda7.13200.1234.73640119111076 Which of the following statements are correct? (Select two.)

A) The CPU usage of I/O wait is 2.3%.
B) The number of I/O requests sent per second is 7.13.
C) The number of blocks read per second is 640119.
D) The CPU usage of application operation is 2,15%.