# Quiz

+ What are the following statements about isolation levels that are incorrect?
  + `A` . Dirty read cannot appear in a repeatable environment
  + `B` . Uncommitted read may be Non-Repeatable Read
  + `C` . Phantom read only appears in repeatable read scenario
  + `D` . `Serializable read` Does not support concurrent reads and writes

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C
1. What are the following statements about isolation levels that are incorrect?
 Dirty read cannot appear in a repeatable environment
 Non-repeatable read may occur for uncommitted reads
 Phantom read only appears in repeatable read scenario
 Serializable read does not support concurrent reads and writes