Story: before mp3s, cds, and even cassettes, people listened to music on vinyl records. that is to say, people listened to vinyl records until they disappeared from most stores in the 1980s. records didn't disappear because people didn't like them, or because they weren't as good as the newer formats. they disappeared because most music companies stopped making them. music companies stopped making records because they knew they could make more money off of the newer formats. as a result, the consumer is left with cd covers that are so small that he or she can barely see the artwork. the cds he or she finds in these covers are longer than records, and as such, contain bloated albums that have on them five good songs and fifty minutes of filler. this didn't happen with records, which usually held around forty minutes of music. if the consumer doesn't like cds, he or she can use mp3s. mp3s come with even smaller artwork, if there's any artwork at all. also, since mp3s are just strings of computer code, the consumer risks losing his or her entire music collection if his or her computer crashes. meanwhile, records, which have less room for filler and can't be lost in a computer crash, are collecting dust in homes across the united states.

question: based on the way the author of the passage discusses the topic, the reader can infer

a. that the author likes writing about music. b. that the author has thought about the differences among records and other formats. c. that the author has been buying music since the 1980s. d. that the author is most likely a musician.