59. For a particular bacterium, its population growth in a test tube can be well described by the equation:

, where N is the bacterial population, which is always a finite number, and a, b, and c are positive numbers. Which of the following statements is incorrect?
(A) After a sufficiently long time, the population will become a fixed but non-zero number.
(B) The parameter b must be greater than a in order to ensure the population remains finite.
(C) The parameters a and b have the same unit.
(D) The rate of change in the population would oscillate and reach a steady state.
(E) None of the above.