The answer is (obviously) C.

The first Lava ¨ brand lava lamp was designed in 1963 by an English engineer, Craven Walker, he found that by mixing a little of this and a little of that, you get a uniquely hypnotic light, which has made Lava ¨ brand motion lamps a worldwide phenomenon. In 1965, two American entrepreneurs saw the lava lite lamp displayed at a German trade show and were in awe at its beauty. They bought the rights to manufacture the lava lamps in North America. The lava lamp was brought back to the US, renamed, and production took off in Chicago. From haphazard invention to cultural icon, Lava ¨ brand motion lamps (AKA lava lamps) have held a place in the hearts of generation after generation.

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