If the Molar Solubility of Silver Phosphate, Ag₃PO₄, Is 1

If the molar solubility of Silver Phosphate, Ag₃PO₄, is 1.76×10 ^{- 5} M, what is the solubility product constant, K _sp, for this ionic compound?

A) K _sp = 2.9×10 ^{- 19}
B) K _sp = 2.6×10 ^{- 18}
C) K _sp = 1.5×10 ^{- 13}
D) K _sp = 3.1×10 ^{- 10}
E) K _sp = 9.3×10 ^{- 10}