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Q62 Single choice

Which of the following code blocks returns a single-row DataFrame that only has a column corr which shows the Pearson correlation coefficient between columns predError and value in DataFrame transactionsDf?

A
transactionsDf.select(corr(["predError", "value"]).alias("corr")).first()
B
transactionsDf.select(corr(col("predError"), col("value")).alias("corr")).first()
C
transactionsDf.select(corr(predError, value).alias("corr"))
D
transactionsDf.select(corr(col("predError"), col("value")).alias("corr"))
E
transactionsDf.select(corr("predError", "value"))

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