# Quiz

+ What are the core features of TiFlash? (Please select 3)
  + `A` . Row store Hybrid storage with row+column
  + `B` . Region supports raft voting and elect
  + `C` . TiFlash uses asynchronous replication to ensure consistency with TiKV
  + `D` . After writing data on TiKV is successful, it can be read consistency TiFlash
  + `E` . CBO chooses to execute SQL statements on TiFlash or TiKV based on cost

------------------------------------------------------------
Reference answer: c, d, e