If I use my debit card at the gas pump, I get a five-cent discount. Which of the following statements is
accurate?

(a) The absolute change in price is the same for all grades ofgas; the relative change in price for Regular (the cheapest) is the greatest.
(b) The absolute change in price is the same for all grades ofgas; the relative change in price for Premium (the most expensive) is the greatest.
(c) The relative change in price is the same for all grades ofgas; the absolute change in price for Regular (the cheapest) is the greatest.
(d) The relative change in price is the same for all grades of gas; the absolute change in price for Premium (the most expensive) is the greatest.