In Terms of Co-Languages, Slang Is a Word

In terms of co-languages, slang is a word

A) or words used by young people.
B) or words used by a specific cultural group.
C) which takes the place of a standard or traditional word in order to add an unconventional, non-standard, humorous or rebellious effect.
D) which is a standard or traditional word used in order to add an conventional, standard, humorous or rebellious effect.