A system administrator ran the iostat command because of system performance problems. The following iostat output is provided:<br /> <img src="https://nimg.ppkao.com/2018-08/zhoulian/201808021154348894.jpg?sign=f2e25a9107eb2e56c1119929f0f35592&t=62d1dba0" /><br /> Based on the output, which of the following is insufficient?()
A、CPU
B、Memory
C、Paging space
D、Disk capacityX