Adi Is Playing with Another Little Boy, When the Boy's

Multiple Choice

Adi is playing with another little boy, when the boy's grandmother comes over to say hello. When the little boy says 'Gramma!', Adi became very upset. He told the other boy that her name is not Gramma, because Adi thinks that only his grandmother can be 'Gramma'. Which common error does this represent?

A) overextension
B) underextension
C) onomatopoeia
D) extralinguistic