The McFadden Act's Prohibition Against Interstate Branching

The McFadden Act's prohibition against interstate branching

A) was weakened by the introduction of shared electronic banking facilities that provide banking services nationwide.
B) was weakened by regional compacts that allowed banks to own banks in other states in their region.
C) impeded banks' ability to diversify their loans and take advantage of economies of scale.
D) did all of the above.