To support herself while attending school, Daun Deloch sold stereo systems to other students. During the first year of operations, Daun purchased the stereo systems for $290,000 and sold them for $400,000 cash. She provided her customers with a one-year warranty against defects in parts and labor. Based on industry standards, she estimated that warranty claims would amount to 2 percent of sales. During the year, she paid $4,320 cash to replace a defective tuner. Required a. Prepare