Which of the following descriptions about performance tuning for this phenomenon is correct?

The user purchased several Huawei OceanStorDorado devices to support the database business on the existing network, but found that multipath ping-pong effect occurred during use.

Which of the following descriptions about performance tuning for this phenomenon is correct?
A . During the optimization process, you can run the upadm startupdateimage command to check whether the failover function is disabled.
B . During the tuning process, you can run the upadm showoption command to view the multipath configuration and confirm that the multipath function has been disabled.
C . During the tuning process, you must use the show performanceport command to view the backend port performance indicators to assist in problem location.
D . To address this problem, you can usually use the echo noop >/sys/block/sdc/queuelscheduler method to temporarily modify the scheduling algorithm of the block device to optimize the multipath ping-pong effect.

Answer: B