Gabriel Is a 16-Month-Old Boy Who Lives with His Mom

Gabriel is a 16-month-old boy who lives with his mom and grandma. He calls his mom "Mama" and his grandma "Nona." Last week, Gabriel was at the grocery store with his mom and saw a little lady with white hair and glasses that looked similar to his grandma. He immediately called her "Nona." Gabriel demonstrated _____

A) an underextension error.
B) a misuse of telegraphic speech.
C) an overextension error.
D) a phonemic error.