The statement: "Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of a language and used in informal speech or writing, but not considered acceptable for more formal situations." means: A: Most of the speakers of a language can use both formal and informal speech in appropriate situations. B: Familiar situations that are experienced by most people are called colloquialisms. C: Familiar words and phrases are found in both speech and writing in formal settings. D: Informal language contains colloquialisms, which are not found in more formal language.