Which of the Following Is the Best Example of a Consumer

Which of the following is the best example of a consumer using social media to share product- or service-related information?

A) Kent posts a selfie showing off his new car on Instagram.
B) On Snapchat, Addison asks her friends if anyone knows of a reliable used car dealership.
C) Rajesh responds to a friend-of-a-friend's Facebook post offering a 1965 Ford Mustang for $7,500.
D) Raymond tweets about a massive airbag recall affecting many Honda makes and models.