If we consider the impact on both consumers and producers, then protection of the steel industry is ?

A. In the interest of the U.S as a whole but not in the interest of the state of Pennsylvania where steel mills are located
B. In the interest of the U.S as a whole and in the interest of the state of Pennsylvania
C. Not in the interest of the U.S as a whole, but it might be in the interest of the state of Pennsylvania
D. Not in the interest of the U.S as a whole, nor in the interest of the state of Pennsylvania