In Cooper Et Al

In Cooper et al.'s study of the role of communication in the battle of the sexes game, the authors report that participants:

A) Never manage to achieve successful coordination with a very large proportion of disequilibrium outcomes.
B) Manage to achieve successful coordination to one of the two available equilibria as long as only one player made an announcement but failed to successfully coordinate when both players make an announcement; primarily because often the two players fail to announce a common strategy.
C) Manage to achieve successful coordination to one of the two available equilibria when both players have an opportunity to make an announcement but fail to achieve coordination when only one player makes an announcement.
D) Manage to achieve successful coordination when players are allowed to move in sequence with one following the other.