Describe the effect of the following changes to one or more economic determinant(s) on the demand for chiropractic visits (assuming everything else remains constant): A. An increase in the out of pocket price paid by the consumer for such services B. An increase in the incidence of low back pain in the general population C. An increase in the out of pocket price for back surgery, considered to be a substitute for chiropractic services D. An increase in the cost of physiotherapy services, considered to be a complement for chiropractic services E. A decrease in consumer permanent income(s) due to an economic recession/job loss