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2. Let S be a set of students, and C be the set of computer science classes. We want to find experts so we want

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2. Let S be a set of students, and C be the set of computer science classes. We want to find "experts" so we want to map students to classes in which they have made an A. What is the appropriate mathematical structure to model this? A function? A relation? Justify your answer by describing key properties of both the original problem and the mathematical structure that you chose

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