What Are the Required Coefficients to Properly Balance the Following

What are the required coefficients to properly balance the following chemical reaction?
H₂(g) + Cl₂(g) → HCl(g)

A) 1, 1, 2
B) 2, 2,
C) 1, 1, 1
D) 2, 1, 2
E) 1, 2, 1