In Which of the Following Cases Was the Marketer Acting

In which of the following cases was the marketer acting legally according to US law?

A) a marketer providing cosmetic surgery services posted fake consumer reviews online and hired people to post testimonials.
B) a mommy blogger marketer posted positive reviews of a new wearable baby carrier on her site after receiving a free one and did not disclose the gift
C) a marketing company wrote a positive blog post about a new tech gadget and sent it to a blogger who posted it as his own.
D) a marketing company posted a privacy policy that indicated that it would NOT allow third parties to collect data, but then did so
E) a marketer failed to obtain double opt-in permission for a text message campaign