The Priority Effect Occurs When

The priority effect occurs when

A) the first species to arrive at a site have a greater probability of becoming established than subsequent species.
B) the first species to arrive at a site have a lower probability of becoming established than subsequent species.
C) the arrival of one species at a site affects the subsequent colonization of other species.
D) the arrival of one species at a site improves conditions so there is an increased probability of subsequent species becoming established.