John, the Supervisor of the Manufacturing Department at a Computer

John, the supervisor of the manufacturing department at a computer firm, is in the process of evaluating his staff's performance. He has determined that 15% of the group will be identified as high performers, 20% as above average performers, 30% as average performers, 20% as below average performers, and 15% as poor performers. Which performance appraisal tool has John chosen to use?

A) behaviorally anchored rating scale
B) forced distribution
C) alternation ranking
D) paired comparison