Does 'We classify the SKUs into three  those with high demand (averaging 5,700 units a week) and low demand variation (Cv=0.6), those with medium demand (averaging 3,000 units a week) and medium demand variation (Cv=0.7), and those with low demand (averaging 1,300 units a week) and high demand variation (Cv= 1.3).' provide a contradiction to the established premise 'There are other possible classifications for SKUs beyond these three, but they are unimportant.'
We classify the SKUs into three  those with high demand (averaging 5,700 units a week) and low demand variation (Cv=0.6), those with medium demand (averaging 3,000 units a week) and medium demand variation (Cv=0.7), and those with low demand (averaging 1,300 units a week) and high demand variation (Cv= 1.3).###There are other possible classifications for SKUs beyond these three, but they are unimportant.