Refer to the Accompanying Graph

Refer to the accompanying graph. If a tax is placed on a good and all else is held constant, we would assume that the supply curve would

A) shift from S₁ to S₃.
B) remain at S₁.
C) shift from S₁ to S₂.
D) shift from S₂ to S₁.
E) shift from S₂ to S₃.