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: riding a bike does not cause pollution, Fact2: Scientific consensus is that pollution causes global warming., Question: Which of the following does not contribute to global warming? (A) nucleus of a cell (B) Flying in a plane (C) Leaving the lights on (D) haploid plants (E) a hydraulic system (F) Driving a car (G) Riding a bike (H) power stations
A:
G