Which of the Following Is an Example of an A-Not-B

Which of the following is an example of an A-not-B error?

A) Dora had a fall while climbing a chair and complained to her mother that the chair is "bad" and began hitting it.
B) Dennis cannot comprehend that a ball made out of his clay modelling set can also be used to make a box or a tower.
C) Devon's mother taught him to say "Dad" and he now uses the term to refer to any male he comes across irrespective of age or familiarity.
D) Daniel always looks below the bed when he cannot find his toy because that was the first place where his father had hidden his toy.