Which of the following code blocks returns a new DataFrame where the column `productCategories` contains only one word per row, resulting in a DataFrame with significantly more rows than the original `storesDF`? A sample of `storesDF` is shown below: ``` storeId productCategories 0 [netus, pellentes...] 1 [consequat enim,...] 2 [massa, a, vitae,...] 3 [aliquam, donec...] 4 [condimentum, fer...] 5 [viverra habitan...] ``` | Databricks Certified Associate Developer for Apache Spark Quiz - LeetQuiz