The main point of the text is that______.
A.
the negative effects of a lack of truthful advertising laws must be avoided at all costs
B.
because truthful advertising laws exist, the economy is prosperous and healthy
C.
without enforceable and reliable truth in advertising, the American economic system could not properly function
D.
the result of a lack of truthful advertising laws in the United States is foreseeable, and thus examinable