To examine the Exhibit, press the Exhibit button. While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw about the I/O bottleneck?()<br /> <img src="https://nimg.ppkao.com/2018-08/xiashuhui/2018080211433885874.jpg?sign=4a198f043f6a3e9cf3af0be701ca405b&t=62d310f4" />
A、 The bottleneck is network I/O.
B、 The bottleneck is local disk I/O.
C、 The bottleneck is paging space I/O.
D、 The bottleneck is to a remote filesystem.