The Recent Emergence of Epidemic Multidrug-Resistant Strains of M

The recent emergence of epidemic multidrug-resistant strains of M.tuberculosis in conjunction with the ending of the downward trend of reported cases of tuberculosis in the United States has been largely attributed to

A) the HIV epidemic.
B) ineffective treatment regimens.
C) political factors.
D) shortened treatment regimens.
E) All of the above are correct.