If the United Auto Workers Union Can Obtain a Substantial

If the United Auto Workers union can obtain a substantial wage increase for auto workers, there will be a(n) :

A) decrease in the supply of automobiles, which is a shift to the right of the supply curve.
B) decrease in the supply of automobiles, which is a shift to the left of the supply curve.
C) increase in the supply of automobiles, which is a shift to the right of the supply curve.
D) increase in the supply of automobiles, which is a shift to the left of the supply curve.