D. Let's say we're analyzing the average gasoline prices across different states in the United States. We have collected data on the average price of gasoline (in dollars per gallon) for each state over the past year. The dataset contains 2,600 average gas prices. D.a. Is this a quantitative or qualitative dataset? D.b. How many variables are being used? List the variable(s). D.c. What chart would you use to present this data? D.d. What would be your x- and y-axis label names