How Has the Expansion of Mass Media into New Formats

How has the expansion of mass media into new formats such as Twitter and YouTube changed the way campaigns are conducted?

A) It has reduced the ability of many candidates to reach the voters effectively with information.
B) Campaigns are now constructed around the mass media replacing many traditional forms.
C) The mass media has increased transparency of candidates and decreased campaign costs.
D) It has driven up the costs of campaigning as the Internet is very expensive to utilize.
E) The Internet has prevented the spread of disinformation allowing campaigns to focus on issues.