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

Answer: B,C