At the End of a Production Run Manufacturing Rubber Gaskets,items

Multiple Choice

At the end of a production run manufacturing rubber gaskets,items are sampled at random and inspected to determine if the item is acceptable (A) or defective (D) .Suppose it is planned to select two items and determine if each is either A or D.Which set of outcomes describes the event that at least one of the items selected is defective?

A) {AA,AD,DD}
B) {AD,DA,DD}
C) {DD}
D) {AA,AD,DA}
E) {AA,DD}