Answer the following question: Fact 1: Microbial fuel cells convert chemical energy into electrical energy. Fact 2: Electricity is a kinetic energy. Given the two facts above, microbial fuel cells convert chemical energy into ?

Available options:
(a). kinetic energy.
(b). Deoxyribonucleicacid.
(c). rays or beams.
(d). harmful substances.
(e). vehicles.
(f). sunlight.
(g). deoxyribonucleic acid.
(h). Greenhouse gases.
Answer:
(a).