Though some scholars argue for a "second American hegemony," Sanderson and Alderson think that:
a. This will coincide with a rise in European hegemony, thereby forming the first ever "dual hegemony"
b. This is quite unlikely, because no hegemon has ever lost and regained a hegemonic position
c. This is a very real possibility
d. The United States has not yet lost its hegemonic status and never will