Which of the following statements about employee motivation is true?

• A budget that is too difficult to achieve is more likely to motivate than is a budget that is too easy or that is tight but attainable.

• Budgets are difficult to use for motivation.

• A budget that is too easy to achieve is more likely to motivate than a budget that is too difficult or that is tight but attainable.

• A budget that is tight but attainable is more more likely to motivate than a budget that is too easy or too difficult to achieve.