Using this chart and your knowledge of government, which is an accurate statement regarding the trend seen here?
A) The "incumbency advantage" and only be seen in Presidential election years.
B) Democrats enjoy the "incumbency advantage" more than Republican candidates.
C) The "incumbency advantage" has never been a deciding factor in the way people cast votes.
D) A downturn in the "incumbency advantage" can coincide with the prevalence of social media.