A. Nickel-32
B. Nickel-60
C. Germanium-56
D. Germanium-60
The number of protons, 28, gives the atomic number, which identifies this atom as nickel. The mass is the number after the dash in the isotope name, which is determined by adding the numbers of protons and neutrons (28 + 32 = 60).
Therefore, the Correct Answer is B.