A student is tasked with writing the net ionic equation for the following reaction: [ cezn(s) ceCuCl₂(aq) rightarrow ceZnCl₂(aq) cecu(s) ]. The student writes the following equation: 'zn(s) cu² (aq) zn² (aq) cu(s)'. What error, if any, is present in the student's net ionic equation?
A) The charges of the ions are incorrect.
B) The reactants and products are not balanced.
C) The state symbols are missing.
D) There is no error in the student's equation.