In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Q: Fact1: harming an animal species has a negative impact on the population size of that species, Fact2: Rarity in plants and animals frequently manifests itself in small or reduced population size., Question: if a species is rare, harm to it's population increases or decreases? (A) drought (B) Pesticides (C) constant (D) increases (E) stays the same (F) influenza (G) deforestation (H) decreases
A:
D