What Is the Biggest Problem with Having Closed Questions on a Survey

What is the biggest problem with having closed questions on a survey or in an experiment?

A) The choice of possible answers is critical and if not done properly, can lead to misleading information.
B) The participants' responses are hard to categorize or summarize.
C) There is no problem with closed questions; they provide the most accurate information by offering certain explicit choices.
D) You have to worry more about how a closed question is worded than how an open question is worded.