A student combined a solution of zinc bromide and silver nitrate. A precipitate formed. Which of the following represents a net ionic equation?

A) Not enough information provided
B) Cannot be determined
C) ZnBr2 + 2AgNO3 → 2AgBr + Zn(NO3)2
D) Zn2+ + 2Ag+ → 2Ag + Zn2+