According to Malcolm Gladwell, author of The Tipping Point, the dramatic decline in crime rates in New York City in the 1990s is a trend
that can be attributed not only to stepping up law enforcement against petty criminals, but because of the fact that the routine presence of beat-cops in the city's neighborhoods created an environment inimical to crime.
A. that can be attributed not only to stepping up law enforcement against petty criminals, but because of the fact
B. attributable not only because of the fact that law enforcement against petty criminals was stepped-up, but also because of the fact
C. attributable not only to stepped-up law enforcement against petty criminals, but also to the fact
D. that resulted not only from stepping up law enforcement against petty criminals, but also due to
E. which was not just because law enforcement against petty criminals was stepped up, but
A. that can be attributed not only to stepping up law enforcement against petty criminals, but because of the fact
B. attributable not only because of the fact that law enforcement against petty criminals was stepped-up, but also because of the fact
C. attributable not only to stepped-up law enforcement against petty criminals, but also to the fact
D. that resulted not only from stepping up law enforcement against petty criminals, but also due to
E. which was not just because law enforcement against petty criminals was stepped up, but