a study analyzed the behavior of the stock prices of firms that had lost antitrust cases. included in the diagram are. all firm`s that lost the initial court decision, even if the decision was later overturned on appeal. the event at times is the initial,preappeal court decision. assume no other information was released,aside from that disclosed in the initial trial, the stock prices all have a beta of 1. is the diagram consistent with market efficiency? why or not?