Which of These Is NOT True of the Principles of Language

Which of these is NOT true of the principles of language?

A) A huge number of morphemes, words, and sentences can be created from only a few small units of language.
B) The various combinations of units within a language are governed by certain principles (e.g., "gst" is not a usual combination in the English language) .
C) If a combination of consonants is forbidden in one particular language (e.g., "tl" at the beginning of a word in the English language) , then it is also forbidden in every other language.
D) In order to speak a language, people must know the principles that govern the phonological combinations, as well as the vocabulary and grammar.