Fact 1: Fire converts chemical energy into light and heat energy. Fact 2: Fuel has a chemical energy. Given the two facts above, fire converts fuel into what?

OPT: 1). burning coal 2). fusion and heat energy 3). heating liquids 4). solid, liquid, gas 5). hydrogen and oxygen 6). light and ice energy 7). light and heat energy 8). heat and cold energy
The answer is:
7).