Which statement best describes this demonstration? A Step one contains a compound, which is chemically combined in step two, forming a mixture in step three. B Step one contains a compound, which is physically combined in step two, forming a mixture in step three. C Step one contains a mixture of elements, which are physically combined in step two, forming a new compound in step three. D Step one contains a mixture of elements, which are chemically combined in step two, forming a new compound in step three.