Which of the Following Is an Advantage of Using Closed

Which of the following is an advantage of using closed rather than open questions in a survey?

A) Closed questions allow researchers to probe the complexities of a subject.
B) Closed questions are faster for subjects to answer and easier for researchers to score.
C) Closed questions allow subjects to give any possible answer and do not lock the subject into any sort of response.
D) One can improve the quality of open questions by conducting a pretest with closed questions to find categories that matter to respondents.
E) Analyzing the responses from closed questions is usually less straightforward than from open questions.