Quiz: Sparse Tables

Why can Sparse Table answer range minimum queries in O(1) but not range sum queries?

1. A.Sum queries need to track more elements
2. B.Range sum requires more memory to store
3. C.Minimum is idempotent (min(a,a)=a), so overlapping ranges give correct result; sum is not idempotent (a+a≠a)
4. D.The minimum operation is faster to compute