If an Ion Contains 33 Protons, 39 Neutrons, and 34

If an ion contains 33 protons, 39 neutrons, and 34 electrons, the ion is:

A) (⁷³Se^{1 −} )
B) (⁷²As^{1 −} )
C) (⁶⁷Y¹⁺)
D) (⁷³Se¹⁺)