Which two caching modes are supported by SmartIO when a Veritas file system is mounted on a Veritas volume in a non-virtual environment? (Choose two.)

Which two caching modes are supported by SmartIO when a Veritas file system is mounted on a Veritas volume in a non-virtual environment? (Choose two.)
A . write caching
B . write-back caching
C . read caching
D . read-back caching
E . block-level read caching

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Answer: B,C