What are the three basic sources of economic profits? Classify the source of economic profit in each of the following:
a. A firm’s profits from developing and patenting a new medication that improves the quality of life for patients‘ suffering from Alzheimer’s.
b. A business’s profit that results from construction of a new highway past the storefront.
c. The profit received by a firm as a result of an unanticipated change in consumer tastes.