Which of the Following Has Been Called into Doubt by the Successful

Which of the following has been called into doubt by the successful presidential campaign of Donald Trump?

A) the need for candidates to maintain a regular public presence during the campaign
B) the value of the Internet for engagement by a candidate with the public
C) the value of paid advertising in presidential campaigns
D) the need for presidents to take strong ideological positions
E) the need for presidents to make use of the media to get elected