What is the expected length of time that a Windows 2008 virtual machine storage I/O will pause during a path failover?

An administrator is informed that there will be a storage maintenance window and that failovers
may occur.
What is the expected length of time that a Windows 2008 virtual machine storage I/O will pause
during a path failover?

A.
0 to 30 seconds

B.
90 to 120 seconds

C.
60 to 90 seconds

D.
30 to 60 seconds