When a mixture containing phosphate is heated with conc. `HNO_(3)` and ammonium molybdated solution, a canary yellow precipitate is formed . The formula of the yellow precipitate is
A. `(NH_(4))_(3)PO_(4)`
B. `(NH_(4))_(3)PO_(4).12MoO_(4)`
C. `(NH_(4))_(3)PO_(4).12MoO_(3)`
D. `(NH_(4))_(3)PO_(4).(NH_(4))_(2)MoO_(4)`