Oops, sorry you didn't get this one. The answer is A.
You can't call them "iPod earphones" because the company that makes iPods (Apple) didn't make these particular earphones, and saying this is misleading and may infringe the iPod trademark.
Options B, C, and D are the acceptable ways of describing this item because they name the manufacturer (Sony) and follow our rules on using the words "for," "compatible with," and "fits."
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