It’s the end of the year and you’re reporting on your most successful blog posts. What information do you use to determine which ones were the most successful?

It’s the end of the year and you’re reporting on your most successful blog posts. What information do you use to determine which ones were the most successful?
  A)  Article views, author name, date
  B)  Blog comments, author name, inbound links
  C)  Article views, number of inbound links, call-to-action clicks
  D)  Call-to-action clicks, promotion channels, blog post length