8. What results from conjugation between a bacterium that lacks an F factor (F−) and a bacterium that has an F factor on its chromosome (F+)? (A) The F− bacterium ends up carrying one or more plasmids from the F+ bacterium； the F+ bacterium is unchanged. (B) The F+ bacterium ends up with a recombinant chromosome that carries some genes from the F− bacterium, and the F− bacterium ends up with an unaltered chromosome. (C) The F+ bacterium ends up with a recombinant chromosome that carries some genes from the F− bacterium, and the F− bacterium ends up with a chromosome that lacks those genes. (D) The F− bacterium ends up with a recombinant chromosome that carries some genes from the F+ bacterium, and the F+ bacterium ends up with an unaltered chromosome. (E) The F+ bacterium ends up with a recombinant chromosome that carries some genes from the F− bacterium, and the F+ bacterium ends up with an unaltered chromosome.