a) Explain how opportunity cost differs from accounting cost. (b) Does every economic choice in business have an opportunity cost? Explain. (c) Provide an example of a business practice with an opportunity cost that is different than its accounting cost. (d) Why do businesses use accounting costs, rather than opportunity costs, in recording their business expenses? (e) Could the opportunity cost of a given business decision be different for different companies and/or be different for the same company at different times? Explain.