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: nuclear reactions in stars causes stars to produce light, Fact2: And, of course, the Sun is a star., Question: What in the sun causes the sun to produce light? (A) energy of moving objects (B) hydrogen and oxygen (C) heat energy (D) water (E) solar rays (F) rotation (G) nuclear reactions (H) kinetic energy
[A]: G


[Q]: Fact1: a black hole is formed by a high-mass star collapses, Fact2: Black Holes Black holes are the inevitable conclusion of Einstein's General Theory of Relativity., Question: When do stars fulfill the inevitable conclusion of Einstein's General Theory of Relativity? (A) inactive (B) Winter (C) an object (D) observe it (E) collapse (F) light (G) our star (H) ligt
[A]: E


[Q]: Fact1: an automobile engine transforms chemical energy into mechanical energy, Fact2: Chemical energy is the energy stored in molecules., Question: Where is energy stored before being used by an automobile to create mechanical energy? (A) sunlight (B) layers of fat (C) The atmosphere (D) In molecules (E) fossil fuels (F) electrically (G) a hydraulic system (H) engines
[A]:
D