A short-order cook can prepare 40 hamburgers in 30 minutes. The cook calculates a unit rate of 60 hamburgers per hour. She multiplies 60 by 3 to estimate that she can prepare 180 hamburgers in 3 hours. Which statement describes the accuracy of the cook’s estimate? a.)The estimate is correct. b.)The estimate is incorrect because the cook can prepare 40 hamburgers per hour, not 60. The estimate is incorrect because the cook can prepare 80 hamburgers per hour, not 60. c.)The estimate is incorrect because the 180 hamburgers needs to be divided by 1/2 hours. d.)The estimate is incorrect because the 60 hamburgers per hour should have been divided by 3 hours.