\\.J (1 point) A market research company wishes to nd out whether College of Idaho students prefer brand A or brand B of instant coffee. A random sample of students is selected, and each one is asked to try brand A first and then brand B (or vice versa, with the order determined at random). They then indicate Which brand they prefer. (a) The response variable here is A. which brand they prefer. ' B. the identity of the student. (2. whether brand A or brand B is tried rst. D. None of the above. (b) This is an example of A. block design. B. stratified sampling design. c. a matched-pairs experiment D. an observational study. not an experiment. .5