Question: Is it true that C is most often the correct answer in a multiple choice question?
Answer: Yes, when an inexperienced question writer creates the question.
Question: Is there anything I can do to make sure that doesn’t happen in my test?
Answer: Yes, use the ‘scramble choices’ option of your testing system.
Question: If I scramble the choices does the order of the choices make a question easier or more difficult?
Answer: Research says “no.” The order of the choices does not affect question difficulty.