The graph describes the population of dandelions in a field over the course of one summer. The graph is titled Population of Dandelions, and plots number of organisms against time. The shape of the curve is gradually increasing at first, and then becomes very steep.

Which statement best describes the growth of the dandelions?

A. Linear growth occurs because the field provides abundant but limited resources during the summer.
B. Logistic growth occurs because the field provides unlimited resources during the summer.
C. Exponential growth occurs because the field provides unlimited resources during the summer.
D. Fluctuating growth patterns occur because the population reached the carrying capacity of the field during the summer.