Question: The output to a Window recipe will have the same number of rows as its input dataset. Always true. This is the key differentiator between

The output to a Window recipe will have the same number of rows as its input dataset.
Always true. This is the key differentiator between Group and Window recipes.
Sometimes true. If a pre- or post-filter step is used, the number of rows may be different.
It cannot be known without knowing the kinds of aggregations included.
False. The number of rows depends on the number of groups in the partitioning column.

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