The Great Recession of 2008 Has __________

The Great Recession of 2008 has __________.

A) discouraged illegal immigrants from testing their fortunes in the U.S.job market.
B) led to a decrease in unauthorized immigration,especially as job losses hit an all-time high in 2008.
C) caused immigrant workers in landscaping and other services related to new home construction to lose their jobs.
D) caused increasing numbers of undocumented immigrants who have been working in the United States to return to their homelands.
E) led to all of the above.