The Bebop style impacted instrumentation in significant ways. There were several implications for drums. All but one of the following assertions is true. Which one is NOT correct?

a. Johnson would double-time, even quadruple-time occasionally, mixing these bop-like outbursts within a more lyrical context.
b. Johnson cultivated a darker but purer tone than most swing era trombonists, with less vibrato.
c. Johnson tended not to play at bop's fastest tempos, and he enjoyed creating more tuneful melodies than Parker or Gillespie.
D) In the bebop era, the trombone supplanted the trumpet as the lead solo instrument.
E) Small combo settings presented a challenge to trombonists, since the nature of the trombone prevented them from achieving the same blinding speed as those on trumpet or saxophone