A HR professional suggests adding self$-$appraisals to the company's performance management system. The other colleague wonders why, since people would certainly want to inflate scores of their own performance. Which statement best supports the idea of using self$-$appraisals?

a$.$

Evaluating one's contributions gets employees thinking about their performance

b$.$

Self$-$ratings are the best source of information.

c$.$

Employees should wait until after a feedback session to evaluate their own performance.

d$.$

Differences between employees' self$-$ratings and peer's ratings can be fruitful topics for discussion.