Which sentence from the article excerpt above offers a supporting detail for the thesis, "The Martians are just to
 wage war on humans"?
 OA. "And before we judge of them too harshly we must remember what ruthless and utter destruction our
 own species has wrought, not only upon animals such as the vanished bison and the dodo, but upon its
 own race."
 OB. "Men like Schiaparelli watched the red planet-it is odd, by the way, that for countless centuries Mars
 has been the star of war-but failed to interpret the fluctuating appearances of the markings they
 mapped so well."
 OC. "The Martians seem to have calculated their descent with amazing subtlety-their mathematical
 learning is evidently far in excess of ours-and to have carried out their preparations with a well-nigh
 perfect unanimity."
 OD. "Had our instruments permitted it, we might have seen the gathering trouble far back in the nineteenth
 century."