Minor-Party Candidates Like Gary Johnson and Jill Stein Have a Difficult

Minor-party candidates like Gary Johnson and Jill Stein have a difficult time winning office because

A) many people consider a vote for a minor-party candidate to be a wasted one because minor-party candidates almost never win.
B) the framers of the Constitution wanted to make it difficult for minor-party candidates to win office.
C) there are no issues on which minor parties can campaign.
D) most Americans do not trust candidates other than Republicans and Democrats.