The marketing director of Ben & Jerry's Ice Cream investigated whether there was a difference in preference for two new ice cream flavorsButterfinger and Rice Krispie Treat. Each participant from a large group of people was randomly assigned to taste one of the two flavors. After tasting, each person rated the flavor on a numerical scale from 1 to 5, where 1 represented strongly dislike and 5 represented strongly like. A two-sample t-interval for a difference between means (Butterfinger minus Rice Krispie) was constructed. Based on the interval, there was convincing statistical evidence of a difference in population mean flavor ratings, with Rice Krispie having the greater sample mean rating. Which of the following could be the constructed interval?

(-2.1 , -1.3)

(-20 , -15)

(1.5 , 2.7)

(15 , 20)

(-1.4 , 2.6)