Dataframe was introduced in which Spark release?

1.	Dataframe was introduced in which Spark release?
Answer» Dataframe was introduced in which Spark RELEASE? (1)Spark 1.3 (2)Spark 1.4.0 (3)Spark 2.1.0 (4)Spark 1.6 Answer of above QUESTION is 1st option (1)Spark 1.3

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