Which linguistic technique was specifically used to develop the name 'Kodak', according to its founder George Eastman?

Product naming is a fascinating intersection of linguistics and marketing. Companies often employ specific linguistic techniques to create memorable brand names. These techniques include sound symbolism, morpheme manipulation, and strategic use of phonetics to evoke specific consumer responses. How well do you understand the linguistic science behind successful product naming strategies?

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Phonetic symbolism - using 'K' sounds which research showed were perceived as stronger and more reliable across multiple languages
Retronymic adaptation - deriving the name from 'codec', an early term for photographic processing
Lexical blending - combining 'code' and 'act' to symbolize the action of capturing images
Onomatopoeia - mimicking the sound of a camera shutter in early 19th century devices