Which sentence demonstrates an error in parallel structure? A. To work in a pharmacy and dispense drugs, you must be precise, detail-oriented, and have ethics. B. I'm going to complain about the customer service representative because he was inconsiderate, distracted, and unhelpful. C. My mother likes to listen to violin instrumentals because she thinks the music is quiet, soothing, and beautiful. D. Instead of buying the sedan, I decided to buy the sports car because it is speedy, sleek, and stylish.