(A) Isotopes have same number of neutrons
(B) Isobars have same number of neutrons
(C) Isotones have same number of protons
(D) Isobars are atoms of different elements
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(A) Isotopes have same number of neutrons
(B) Isobars have same number of neutrons
(C) Isotones have same number of protons
(D) Isobars are atoms of different elements