RD exam topics: Produce Pigments (Carotenoids, Chlorophylls, & Flavonoids)

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Question:
Which of the following best describes the expected result of adding lemon juice to green beans in a cooking pot?
A. The color of the green beans would change to bright green
B. The color of the green beans would change
C. The color of the green beans would change to olive green due to the presence of chlorophyllin
D. The color of the green beans would change to olive green