Professor Milne was preparing to do qualitative interviewing in a field research project. Milne knew that you were a research methods student and asked for your advice. You told Milne: a. try not to alter the specific wording of questions. b. try to use the same probes with the same wording for each respondent. c. try not to alter the sequence of questions. d. be sure to think up interesting things to say when the conversation lulls. e. to begin with a search of the literature.