The code block shown below contains an error. The code block is intended to return a new DataFrame that is the result of a position-wise union between DataFrame storesDF and DataFrame acquiredStoresDF.
The correct method to perform a position-wise union (i.e., a union by name) between two DataFrames in PySpark is `unionByName`. The correct answer is the one that does not perform a position-wise union.
The code block that contains an error is:
**A. concat(storesDF, acquiredStoresDF)**
The `concat` function does not exist in PySpark for DataFrame operations. Instead, you should use `union` or `unionByName`.
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