Consider the following statements: 1. I. Behavioral scientists find that perfection standards often discourage employees and result in low worker morale. 2. II Practical standards are also known as attainable standards. 3. III. Practical standards incorporate a certain amount of inefficiency such as that caused by an occasional machine breakdown. Which of the above statements is (are) true? O I only O ll only. O lll only O ll and III. O I, lland Ill.
