Which of the Following Is True of the Paired-Comparison Appraisal

Which of the following is true of the paired-comparison appraisal approach?

A) It typically involves hiring organizational psychologists to analyze the performance of employees as a group.
B) It requires an appraiser to choose the most appropriate statement from a series of statements about an employee.
C) It is most effective when a supervisor wants to find one outstanding employee in a group.
D) It requires a supervisor to write a detailed description of an employee's performance.