Studies of Overregularization - the Phenomenon in Which Children Say

Studies of overregularization - the phenomenon in which children say "mouses" or falled" instead of "mice" or "fell" -- indicate that

A) children make this grammatical error in approximately 25 percent of utterances in which irregular verb forms would be correct
B) overregularization increases from the age of two years to school age
C) the more often parents correctly use an irregular form, the less often children overregularize it
D) young children rely on memory rather than grammatical rules to produce both regular and irregular verb forms