The reaction (3NH₄NO₃ + Na₃PO₄ → (NH₄)₃PO₄ + 3NaNO₃) uses 30.0 g ammonium nitrate and 50.0 g sodium phosphate. Determine the limiting reagent.
a) Ammonium nitrate
b) Sodium phosphate
c) Both are limiting reagents
d) Neither is a limiting reagent