What Is an Advantage of the Nonhierarchical Clustering Over the Hierarchical

What is an advantage of the nonhierarchical clustering over the hierarchical clustering procedure?

A) In nonhierarchical clustering, objects can be removed from an early-formed cluster and reassigned to another cluster formed later in the sequence.
B) In nonhierarchical clustering, objects cannot be removed from an early-formed cluster and reassigned to another cluster formed later in the sequence.
C) Results are more robust with nonhierarchical clustering compared to hierarchical clustering.
D) Nonhierarchical clustering is much quicker and requires less computing capability than hierarchical clustering.
E) Nonhierarchical clustering provides a simpler solution than does hierarchical clustering.