Suppose a particular species of flowering plant that lives only one year can produce red, white, Or pink blossoms, depending on its genotype. Biologists studying a population of this species Count 300 red-flowering, 500 white-flowering, and 800 pink-flowering plants in a population. When the population is censused the following year, 600 red-flowering, 900 white-flowering, And 1,000 pink-flowering plants are observed. Which color has the highest fitness?
选项：

A: Red
B: White
C: Pink
D: All of the above