Which of the following is NOT true according to the passage?

• A. Dolphins live in a primarily acoustic world and use a variety of auditory signals for communication
• B. Some dogs can not even learn the names of 200 different toys.
• C. Chimpanzees produce functionally referential vocalizations which encode sufficient information about objects to allow conspecifics to respond accordingly.
• D. Louis Herman made an impressive scientific lifetime achievement in demonstrating that dolphins understand referential pointing.
• E. None of these