One Day, You Go Outside and See That the Cars

One day, you go outside and see that the cars on the street are covered in a yellow "dust." Which of the following statements can be correctly applied to this "dust"?

A) The dust is pine pollen and is so abundant because the pines are wind-pollinated.
B) The dust is the spore production of ferns and is so abundant because the spores are wind-dispersed.
C) The dust is the seed production of ferns and is so abundant because the seeds are tiny and take very little energy to produce.
D) The dust is the seed production of pines and is so abundant because the seeds are tiny and take very little energy to produce.