An environment has a carrying capacity of 250 for species A, and
a carrying capacity of 400 for species B. The rate of growth for
species A is 0.2, and the competitive effect of species B on
species A is 0.25. The current population size of species A is 105
while species B has a population size of 135. What is the change in
population size of species A in the next generation?

a. 21

b. 9

c. 12

d. 114

e. 26