You have a Python function that calculates a complex statistical measure on a given row of a DataFrame. You want to apply this function to each row of a Snowpark DataFrame in a distributed manner. Which of the following is the MOST efficient way to achieve this?
Correct Answer: B
Pandas UDFs (User-Defined Functions) are designed for efficient row-wise operations on Snowpark DataFrames. The @pandas_udf decorator enables Snowpark to execute the function in a distributed manner across Snowflake's compute resources, maximizing performance for row-by-row calculations. 'apply' method doesn't exist directly on Snowpark DataFrames. Iterating through rows (Option C) is extremely inefficient. Option D involves RDD which is not exposed directly with Snowpark DataFrames. While option E is an alternative it introduces unnecessary overhead.