Primary colors are red, yellow and blue. Tertiary colors are made by mixing equal parts of one primary color and one secondary color. There are six tertiary colors yellow-orange, red-orange, red-violet, blue-violet, blue-green, and yellow-green.
I believe its B. THe pipe organ was invented in the third century by the greek engineer Ctesibius of Alexandria, while the piano was invented in 1688.
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