The Contact Process for the Production of Sulfuric Acid Is $\rightarrow$

Multiple Choice

The contact process for the production of sulfuric acid is
S(g) + O₂(g) $\rightarrow$ SO₂(g)
2SO₂(g) + O₂(g) $\rightarrow$ 2SO₃(g)
SO₃(g) + H₂SO₄(l) $\rightarrow$ H₂S₂O₇(l)
H₂S₂O₇(l) + H₂O(l) $\rightarrow$ 2H₂SO₄(l)
How many moles of "new" sulfuric acid are produced from 150 mol S(g) ?

A) 300 mol
B) 450 mol
C) 225 mol
D) 150 mol
E) 75 mol