Which of the following best describes the 80-20 Principle (which can be found within the the ABC analysis)?

approximately 80 percent of a retailer's sales came from 20 percent of its products

80 percent of the retailer's customers were repeat customers, and only 20 percent were new

approximately 20 percent of a retailer's sales came from 80 percent of its products

approximately 80 percent of a retailer's inventory was sold, and 20 percent was shrinkage