What is reliability in the context of performance appraisal systems? Select a Choice Below current question choices OptionA It is the degree of how well the performance appraisal instrument rates what it intends to rate. OptionB It refers to the ability of an instrument to rate the actual expected performance of an employee. OptionC It means different raters would likely give different ratings on an employee's performance. OptionD It refers to the consistency of measurement of an employee's performance over time