Which sentence from the passage best shows the author's use of deductive
reasoning?
A. The people inside the lifeboats are doubling in numbers every 87
years; those swimming around outside are doubling, on the
average, every 35 years, more than twice as fast as the rich.
B. Put differently, the doubling time for this aggregate population is
21 years, compared to 87 years for the U.S.
C. And since the world's resources are dwindling, the difference in
prosperity between the rich and the poor can only increase.
D. As of 1973, the U.S. had a population of 210 million people, who
were increasing by 0.8 percent per year.