Marcy Is Having Lunch with Her Mother When a Friend

Multiple Choice

Marcy is having lunch with her mother when a friend stops by the table to say hello. "Marcy, this is my friend, and her name is Marcy, too", the mother says. The child looks up and says, "You can't be named Marcy. That is my name." In a linguistic sense, this example demonstrates

A) overregulation.
B) overextension.
C) underregulation.
D) undergeneralisation.