Groups Like the "Occupy" Movement and Tea Party Have Galvanized

Groups like the "Occupy" movement and Tea Party have galvanized sizable segments of society and will likely inspire other groups because ______.

A) organizers of social movements quickly imitate successful innovations, and each new group can draw on the experience of its predecessors
B) they were able to circumvent the law without any repercussions
C) they merely relied on selective incentives, not moral arguments, for its success
D) it was such an elaborate failure that the other organizations could easily see what actions to avoid