According to the example in the book, medical research has shown that grapefruit juice can adversely affect the effectiveness of certain medications. This is likely to affect the demand for grapefruit because Part 2 A. the number of grapefruit sellers will decrease. B. the prices of oranges will change. C. people will buy less grapefruit because their incomes have increased. D. people will buy less grapefruit because their tastes and preferences have changed