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Select the correct answer.
Which statement best summarizes the difficulties in researching TCM?
A.
Because of poor-quality past studies, research on TCM has been lagging.
B.
Because of the popularity of TCM, doctors have little time to conduct studies.
C.
Because TCM philosophy is hard to evaluate, Western research focuses on whether treatments manage symptoms.
D.
Because TCM is specialized, it’s hard for it to meet modern scientific standards.