Which statement correctly identifies the nuclide that is most likely to be unstable and describes why? a) carbon-14 (14c) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1: 5. b) uranium-238 (238u) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6: 1 and the ideal neutron-to-proton ratio is 1: 1. c) carbon-14 (14c) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1: 2. d) uranium-238 (238u) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6: 1 and the ideal neutron-to-proton ratio is 1: 2.