Data from the registrar's office at Gigantic State University indicate that over the past 20 years tuition and enrollment have both increased. From this information we can conclude that

Question

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The increase in both tuition and enrollment over the 20-year period at GSU cannot be solely attributed to the law of demand being an exception, nor can it be assumed that the supply curve of education at GSU is downsloping without further information. The most likely explanation is that factors such as school-age population, incomes, and preferences for education have increased over the 20-year period, leading to both an increase in demand for education and an increase in the supply of education offered by GSU.

Data from the Registrar's Office at Gigantic State University Indicate