48.View the Exhibit to examine the error obtained during the I/O calibration process. There are no data files on raw devices. What is the reason for this error?
A.The DISK_ASYNCH_IO parameter is set to TRUE.
B.The FILESYSTEMIO_OPTIONS parameter is set to NONE.
C.Another session runs the I/O calibration process concurrently.
D.The pending area has not been created before running the I/O calibration process.
正确答案是B