invalid option -- 'c'

[minasmz]

Hi,
It seems that there is no -c option while it is mentioned in the tutorial it has -c option.
when I write for example :
text2ngram -c -n3 myText.txt
it gives me: text2ngram: invalid option -- 'c'
also when I write:
text2ngram -h
There is no -c option.
also -m option does not exist as well.

I really appreciate if you could answer to this issue.