Which one of the following statements is not correct?

A$.$

A token is tagged as I if it marks the ending of a chunk.

B$.$

NPS Chat Corpus is an annotated text corpus.

C$.$

The solution to recursion in linguistic structure is to get the chunker to loop over its patterns.

D$.$

In the training dataset of the corpus CONLL$2000,$ there is one token per line, each with its part$-$of$-$speech tag and its named entity tag.