How many protons, neutrons,
and electrons are in this ion?
7Ga³+
31

A. 31 p, 71nº, 31 e-
B. 40 p*, 31 n°, 40 e-
C. 31 p, 40 n°, 28 e-
D. 31 p, 40 n°, 31 e-