The Prototype Approach to Semantic Memory Works Especially Well in Which

The prototype approach to semantic memory works especially well in which of the following conditions?

A) When applied to a group of items that have no single characteristic in common
B) When explaining how we store details about each individual example of a category
C) When accounting for why experts and nonexperts differ with respect to their use of subordinate-level categories
D) When pointing out why people believe that some categories have clear-cut boundaries, rather than fuzzy boundaries