Which of the following will always result in a null value when aggregate operations are applied?

A sum collection (a collection on which sum is applied) can result in zero if all elements are zero, or a non-zero number, not necessarily null.

"Data collection" is a generic term and doesn't specify the state (empty or populated) that would inherently lead to a null aggregate result.

An average collection (a collection on which average is applied) can result in zero if all elements are zero, or a non-zero number, but not necessarily null unless the collection is empty.

When an aggregate operation (like sum, average, min, or max) is applied to an empty collection, there are no elements to process. In many programming languages and database systems, this scenario typically results in a null value or an equivalent default, indicating the absence of a meaningful result.