(A) The channels that theoretically make the most sense.
(B) The channels your customers are currently using.
(C) The channels that are common in your industry.
(D) The channels that are the most trendy at the moment.
This question is a part of the HubSpot Inbound Marketing Quiz from Lesson 7. You can check out all the answers to these quiz questions in our HubSpot Inbound Marketing Quiz Answers page.