Yodo (1), whose atomic number is 53, has very important applications. At medicine, it is used as tincture of iodine, an antiseptic. Knowing that the iodine is a nonmetal, its group and period in the periodic table are, respectively: the A)actinides, 5o period. B)chalcogen, 5o period. C)chalcogen, 3o period. D)halogens, 7o period. E)halogens, 5operiod.​