A data scientist is working on one-hot encoding categorical attributes in a PySpark DataFrame named 'features_df' using Spark ML. The string column names are stored in the variable 'input_columns'. The provided code snippet is causing an error. What change is necessary to correctly perform one-hot encoding?

Real Exam

The 'method' parameter must be explicitly defined in the OneHotEncoder.

9.4%

The 'fit' operation line should be deleted from the code.

12.5%

StringIndexer should be applied to the categorical attributes before one-hot encoding.

71.9%

The output columns must have the same names as those in 'input_columns'._

6.3%

Databricks Certified Machine Learning - Associate