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").

Example input: Fact1: a plant requires sunlight to grow, Fact2: Plants to avoid are fast-growing vines that can take over an area in no time., Question: What requires sunlight in order to take over an area? (A) spores (B) fish (C) plants (D) humans (E) pods (F) Oak (G) opossums (H) coral
Example output: C
Example explanation: This is a good example. Based on the facts plants require sunlight in order to take over an area.
Q: Fact1: Biodiversity generally increases from the poles to the equator., Fact2: Biodiversity and ecosystems are complex systems., Question: What generally increases from the poles to the equator? (A) kinetic energy (B) Energy. (C) warmth (D) voltage (E) sun's heat (F) temperature (G) complexity (H) sunlight
A:
G