Why does the author refer to the FDA's approval of acupuncture needles?

Responses
A to demonstrate that acupuncture is regulated and safe.to demonstrate that acupuncture is regulated and safe.
B to ensure that the reader chooses the correct needles.to ensure that the reader chooses the correct needles.
C to clarify the methods used by acupuncturists.to clarify the methods used by acupuncturists.
D to show the superiority of traditional Chinese medicine.

A to demonstrate that acupuncture is regulated and safe.