Write and Balance the Equation for the Combination Reaction That $\rightarrow$

Write and balance the equation for the combination reaction that occurs when sulfur dioxide gas, SO₂, reacts with oxygen gas.

A) 3SO₂(g) + 2O₂(g) $\rightarrow$ 3SO₃(g)
B) SO₂(g) + O₂(g) $\rightarrow$ SO₃(g)
C) SO₂(g) + O₂(g) $\rightarrow$ SO₄(g)
D) 2SO₂(g) + 2O₂(g) $\rightarrow$ 2SO₃(g)
E) 2SO₂(g) + O₂(g) $\rightarrow$ 2SO₃(g)