Sony, a Firm Once Synonymous with Portable Music, Has Ceded

Sony, a firm once synonymous with portable music, has ceded its market dominance to Apple because:

A) it did not provide tracks from Sony Music artists to the Apple iTunes store.
B) its technology offerings were too futuristic and out of sync with the waves of computing to appeal to customers.
C) it failed to take advantage of opportunities presented by Moore's Law.
D) its music players contradicted the price/performance phenomenon predicted by Moore's Law.
E) it attempted to straddle the twin markets of online music retail and electronic music players, and could not capitalize on either.