Why are some raisins brown-colored and some raisins golden-colored?
A. Dark-colored raisins are darker because of heat treatment, which changes the pH of the fruit, thus darkening it.
B. Dark-colored raisins are treated with metal salts.
C. Light-colored raisins are often treated with sulfur dioxide, which prevents enzymatic browning.
D. Light-colored raisins are treated with ethylene gas to facilitate ripening.
Answer: C
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