Databricks Certified Machine Learning - Associate
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Given a PySpark DataFrame named 'spark_df', write a code snippet that converts it to a Pandas on Spark DataFrame and then performs a groupby operation on a column named 'category'._
A
pandas_df = spark_df.toPandas() grouped = pandas_df.groupby('category')_
B
pandas_df = spark_df.toPandas().groupby('category')
C
pandas_df = spark_df.toPandasAPI() grouped = pandas_df.groupby('category')_
D
pandas_df = spark_df.select('category').toPandas() grouped = pandas_df.groupby('category')_