Which of the following is the most accurate statement? 

a) Like the 20th century, the 21st century will definitely be “the American Century.”

b) Although we have had some recent problems, our economy is strong enough to continue to support our present global military commitments indefinitely.

c) The United States is a fading economic and military power, and will soon be overtaken by its rivals.

d) It is far too soon to say whether or not the 21st century will be another “American century.”