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").

[EX Q]: Fact1: a light bulb converts electrical energy into light energy when it is turned on, Fact2: Light bulbs are rated in Watts., Question: How is converted energy into light energy rated? (A) energy (B) unique (C) heat (D) good (E) watts (F) parsec (G) kilojoule (H) kinetic energy
[EX A]: E

[EX Q]: Fact1: erosion of soil has a negative impact on the environment, Fact2: Weathering and erosion continue to shape it today., Question: What has a negative impact on the environment? (A) harmful substances (B) weathering of soil (C) saving water (D) planting trees (E) deforestation (F) massive damage (G) recycling (H) enormous damage to homes
[EX A]: B

[EX Q]: Fact1: a radio converts electrical energy into vibrations, Fact2: All radio is transmitted electrical energy., Question: electrical energy is transmitted into what for sound? (A) vibrations (B) motion (C) heat (D) sensory neurons (E) waves (F) light (G) Firecrackers (H) cold
[EX A]:
A