Which of the Following Is TRUE

Which of the following is TRUE?

A) The central-office edit depends primarily on follow-up,either directly with the interviewers to clear up discrepancies or by having the interviewers recontact the respondents to clear up inaccuracies or omissions.
B) If more than one person handles the central-office edit,the questionnaires should be divided by respondents with one editor doing all the work on a set of questionnaires.
C) The first step in establishing categories is to get a "feel" for the data through preliminary observation of the results so that one can decide what categories are pertinent.
D) Coding the data refers to the affixing of a code number to each completed questionnaire so as to aid in the identification of the respondent.
E) One editor should handle all completed questionnaires in the central-office edit.