Carlos arranges his notes about radioactive decay in a graphic organizer. He wants to add the labels shown. Label 1: Photon Label 2: Positron Label 3: No change in mass number A venn diagram with 2 intersecting circles with the left circle labeled gamma decay and the right labeled beta decay. There is an X in the gamma decay circle. There is a Z in the beta decay circle. There is a Y in the intersecting area. Which is the best region for each label? Label 1: Z Label 2: X Label 3: Y Label 1: X Label 2: Z Label 3: X Label 1: X Label 2: Z Label 3: Y Label 1: X Label 2: Z Label 3: Z