Odd-even pricing refers to question 4 options: 1) setting prices one way for product lines and another way for individual brands. 2) setting prices of luxury items at even price points and setting the price of necessities at odd price points. 3) setting prices a few dollars or cents under an odd number. 4) adding a fixed percentage to the cost of all items in a specific product class. 5) setting prices a few dollars or cents under an even number.