Which of the following statements is/are true about group bonus schemes?
 
　　1. Group bonus schemes are appropriate when increased output depends on a number of people all making extra effort
　　2. With a group bonus scheme, it is easier to award each individual’s performance
　　3. Non-production employees can be rewarded as part of a group incentive scheme
　　A. 1 only
　　B. 1 & 2 only
　　C. 1 & 3 only
　　D. 2 & 3 only

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