Electronic products can be frustrating or satisfying for consumers. For example, a consumer may be highly satisfied with the applications available on his new smart phone, but becomes frustrated when he is unable to operate it with ease. If a consumer researcher wants to measure these positive and negative emotional reactions, then which of the following measures will be best suited for this purpose?
A. Cross- Sectional SurveyB. Bipolar ScaleC. Longitudinal SurveyD. PANASE. Likert Scale

Aproperty title search firm is contemplating using online software to increase its search productivity. currently an average of 40 minutes is needed to do a title search. the researcher cost is $2 per minute. clients are charged a fee of $400. company a's software would reduce the average search time by 10 minutes, at a cost of $3.50 per search. company b's software would reduce the average search time by 12 minutes at a cost of $3.60 per search. which option would have the higher productivity in terms of revenue per dollar of input?