Which of the following statements about contingency questions is FALSE? Contingency questions are ...

Which of the following statements about contingency questions is FALSE? Contingency questions are designed to:
 
  a. increase the likelihood of responses from those for whom the questions are relevant.
 b. spare respondents the frustration of reading and puzzling over questions that are irrelevant to them.
 c. enable the researcher to ask several questions that have the same set of answer set.
 d. facilitate the respondent's task in completing the questionnaire.
 e. all of these choices ARE accomplished using contingency questions.