cobalt has an atomic number of 27 and an atomic mass of 59. which of the following statements is correct?       a. cobalt has 27 protons, 27 electrons and 32 neutrons.       b. cobalt has 32 protons, 27 electrons, and 27 neutrons      c. cobalt has 27 protons, 32 electrons, and 27 neutrons      d. cobalt has 27 protons, 27 electrons, and 59 neutrons