Which formula below represents the logistic growth rate?
a) P_n = P_(n-1) + d
b) P_n = r(1-(P_(n-1))/K) * P_(n-1)
c) P_n = (1+r)(P_(n-1))
d) P_n = P_(n-1) + r(1-(P_(n-1))/K) * P_(n-1)