In United States V.Colgate & Co.(1919),the Supreme Court

In United States v.Colgate & Co.(1919) ,the Supreme Court:

A) overruled a long-standing precedent that had required per se treatment for vertical maximum price-fixing.
B) reaffirmed that horizontal divisions of markets are illegal per se and plainly represent agreements not to compete.
C) held that a manufacturer could unilaterally refuse to deal with those who failed to follow the manufacturer's suggested resale prices.
D) held that vertical minimum price-fixing would be judged under the rule of reason rather than the per se approach.