Which of the Following Statements Concerning the Ability of Animals

Which of the following statements concerning the ability of animals to acquire language is false?

A) The ability to use language-in a very basic, primitive way-may not be entirely unique to humans.
B) Animals have never shown behaviour that suggests an understanding of grammatical rules.
C) Questions remain concerning whether the language-like behaviour of animals demonstrates all the critical properties of language.
D) Some language-like skills have been taught to a number of species.