According to the Parallel Distributed Processing Model of Semantic Memory

According to the parallel distributed processing model of semantic memory, how does spontaneous generalization differ from default assignment?

A) In spontaneous generalization, we make a more conscious effort to draw inferences.
B) In spontaneous generalization, we can only account for conditioning (e.g., classical conditioning) , whereas default assignment is a more sophisticated process.
C) Spontaneous generalization takes place in long-term memory; default assignment takes place in working memory.
D) In spontaneous generalization, we draw a conclusion about an entire category; in default assignment, we draw a conclusion about one member of a category.