Which of the following statements is false?

Question $1$Answer

a$.$

After performing a self$-$join on a dataframe the resulting columns will contain duplicate column names.

b$.$

Executing queries using SparkSQL Dataframes and DataSets functions are at least as fast as using their RDD counterparts, often faster.

c$.$

You can add columns to a dataframe using the withColumn function.

d$.$

DataSets contain schemas whereas DataFrames do not contain schemas.