Question: Identify one or more correct answers: Reordering an array of pointers to list elements, rather than sorting the elements themselves, is a good idea when

Identify one or more correct answers: Reordering an array of pointers to list elements, rather than sorting the elements themselves, is a good idea when

1. the number of elements is very large.

2. the individual elements are large in size.

3. the sort is recursive.

4. there are multiple keys on which to sort the elements.

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