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While executing your code, you encounter the following error message. What could be the potential cause of this error?
A
The right_outer join operation is not supported in Spark.
right_outer join
B
Using multiple select operations in a single line of code is not allowed.
select
C
Selecting all columns from both DataFrames is not permitted.
D
The medal column is present in both DataFrames, causing ambiguity.
medal
E
The medal column does not exist in any of the DataFrames involved in the join.
