If a 500 ML Sample of Ammonium Hydroxide Is Titrated with 25

If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M sulfuric acid to a methyl red endpoint,what is the molarity of the base? 2 NH₄OH(aq) + H₂SO₄(aq) → (NH₄) 2SO₄(aq) + 2 H₂O(l)

A) 0.100 M
B) 0.150 M
C) 0.200 M
D) 0.300 M
E) 0.400 M