One Reason That Overregularization Is an Interesting Error Is Because

One reason that overregularization is an interesting error is because

A) adults make comparable errors when they are excited or in a hurry.
B) it suggests that language does not have a consistent structure or grammar.
C) it suggests that children have failed to internalize the extension operating principle.
D) it usually appears after children have learned and used the correct forms of verbs and nouns.