"The curious paradox in the American character" (Last Para. ) means that ______.

Americans were so busy working to acquire comforts and conveniences that they were unable to relax and to enjoy leisure time when they had it
B. Americans love comforts and conveniences very much, yet they don't know how to get them
C. Americans value time very much, yet they are too wasteful of material things
D. Americans know it's unhealthy to eat fast food, but they just can't resist it