Consider this reaction: A piece of copper is dropped into a solution of magnesium phosphate.

Which of the following most accurately represents the reaction (omitting states of matter)?

a
3 Cu + Mg3(PO4)2 --> 3 CuMg + 2 PO4
b
6 Cu + 2 Mg3(PO4)2 --> 2 Cu3(PO4)2 + 6 Mg
c
Cu + Mg3(PO4) --> Cu(PO4) + Mg3
d
No reaction occurs