As part of a school district survey, a representative group of parents was selected to be interviewed concerning their attitudes toward various school policies. Which of the following factors would be least important to know when interpreting the results of the survey? A- The percentage of the representative group who were not at home when the interviewers came B- The percentage of the representative group who refused to be interviewed C- The percentage of the people responding who had children in school D- The percentage of the people responding who were interviewed on Wednesday instead of Tuesday