Which of the Following Is an Advantage of a Structured

Which of the following is an advantage of a structured interview? 

A)  ​It allows an interviewer to ask any question, including non-job-related questions. 
B)  ​It does not require the preparation of questions before the interview takes place. 
C)  ​It facilitates comparison between applicants since all applicants are asked the same questions. 
D)  ​It allows an interviewer to probe into missing information uncovered during the unstructured portion of the interview.