Which of the following, if true, could account for the discrepancy described in the paragraph above? A. A wide variety of insects, any of which can experience dwindling numbers during drought years, disperse the seeds of non-self-pollinating plants. B. Non-self-pollinating plants release larger seeds that have a far greater chance of germinating than those formed by self-pollinating plants. C. During non-drought years, non-self-pollinating plants do not create more seeds than do self-pollinating plants. D. Insects sometimes spread the seeds released by self-pollinating plants but such seeds rarely germinate. E. Non-self-pollinating plants thrive in tropical parts of the world more readily than do self-pollinating plants.