Which of These Statements About Sentence Variety Is Not True

Which of these statements about sentence variety is not true?

A) Using too many simple sentences makes writing seem choppy.
B) Mixing negative and positive sentences maintains reader interest.
C) Readers may have difficulty reading a message with too many long sentences.
D) If you use different sentence patterns and lengths, your messages will be more interesting.
E) A message that contains one long sentence after another can bore readers.