How many atoms of each element are present in 3 formula units of (NH4) 2HAsO4?
A) 10 N atoms, 18 H atoms, 5 As atoms, 18 O atoms
B) 6 N atoms, 9 H atoms, 3 As atoms, 12 O atoms
C) 5 N atoms, 45 H atoms, 4 As atoms, 18 O atoms
D) 6 N atoms, 27 H atoms, 3 As atoms, 12 O atoms
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