Josh and His Friends Were Watching a Televised Debate Between

 Josh and his friends were watching a televised debate between two political candidates. When the candidates were asked by the moderator if they had accepted donations from any questionable sources, one of the candidates began to laugh nervously and speak less fluently than before. Josh and his friends should conclude that

A) the candidate is obviously lying, and they should vote for the other one.
B) the candidate is obviously telling the truth, but he is nervous.
C) no conclusions can be drawn, because a question like that would make everybody act guilty.
D) the candidate may simply be nervous about the question, but he is acting like he is being dishonest.