A radioactive nuclide that is used for radiation therapy for cancer has 33 neutrons and a mass number of 60. Which is the correct symbol for this nuclide?Superscript 27 subscript 60 upper C o. Superscript 33 subscript 60 upper C o. Superscript 60 subscript 33 upper C o. Superscript 60 subscript 27 upper C o.