What method would you use to view the CPU statistics of the 5th day?

On the last day of the month, you want to compare the CPU statistics of the system with the CPU statistics of the 5th day of the month. What method would you use to view the CPU statistics of the 5th day?

A.
Use the top command and examine the CPU statistics.

B.
Use the iostat -c command to observe the %user column.

C.
Use the vmstat command and observe the si and so columns of the output.

D.
Use the sar -u command with the /var/log/sa directory in the command.