Currently about 70 percent of all urban households recycle some portion of their
garbage, 25 percent more than did ten years ago. This increase can be
attributed , in part , to the fact that a larger portion of the population is now under
the age of 47.
Of the following, which can be most properly inferred from the passage
above?
A. Of those who currently recycle, at least 70 percent recycle less than 25
percent of what is potentially recyclable.
B. Younger people are generally more conscientious about waste disposal
than are older people.
C. People under the age of 47 are more likely to recycle than are their older
counterparts.
D. The overall population has risen by at least 25 percent in the past ten
years.
E. People currently over the age of 47 recycled more often ten years ago.

Mixed with C and E. How to choose?