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In a big data environment, you are tasked with implementing a UDF that processes a very large dataset. Which type of Pandas UDF would you prefer and why?
A
Scalar UDF because they are simpler to implement.
B
Iterator UDF because they can handle large datasets more efficiently by processing data in chunks.
C
Grouped Map UDF because they are more intuitive.
D
Grouped Aggregate UDF because they provide better performance.