Which statement is the best thesis for a compare-and-contrast essay?

ABoth of the political ads describe the candidates’ opinions about creative ways to improve regional transportation.

BOne of the ads uses photographs of traffic jams and construction projects, while the other ad uses quotes from citizens.

COne of the ads shows existing regional traffic problems, while the other ad shares opinions about proposed projects.

DBoth ads effectively convey the candidates’ names and political parties, but the ad with citizen testimonials is the most convincing.