Co-Languages

Co-languages:

A) are language systems that exist and interact with the dominant language but are nonetheless distinct from it.
B) are occupation-specific languages used by people in a given profession.
C) refer to the use of existing words to take the place of standard words.
D) refer to the use of newly invented words to take the place of traditional words with the intent of adding an unconventional effect.
E) involve the study of the principles and rules for constructing sentences in natural languages.