In the Context of Assessments by Someone Other Than a Supervisor

In the context of assessments by someone other than a supervisor, supervisors

A) often know how an employee behaves at all times and in all situations.
B) always appreciate the full impact of an employee's behavior on people inside and outside an organization.
C) can use subordinate appraisals to supervise more effectively and to make their organization more competitive.
D) should ensure that the employees' names and their individual responses are revealed to everyone involved.