Pamela, a 3-year old, sees a new animal she's never seen at the zoo. Her father told her "That's called Capybara." After touring the whole zoo, Pamela asked her father "Can we go see Capybara, again?" Her father realized Pamela learned the name of the animal at the first introduction of the name. This is an example of:
A. Undergeneralization
B. Fast-mapping
C. Overgeneralization
D. Private speech