Consider the bar graph of "Bias in Cable News Coverage of Presidential Candidates, 2012" in the tutorial. Which of the following statements can be supported by the graph? a.) Negatively-biased campaign coverage only affects Republican candidates. b.) Bias in cable news coverage is a new phenomenon that emerged in the 21st century. c.) Overall, the coverage of candidates by major news networks is slightly more negative than positive. d.) Media outlets like CNN or FOX News avoid the use of bias when framing their campaign coverage