Which Statement About 360-Degree Feedback Systems Is Most Likely True

Which statement about 360-degree feedback systems is most likely true?

A) Most firms use 360-degree feedback as a development tool rather than for performance appraisal purposes.
B) Few global firms use 360-degree feedback because of its mixed development results.
C) 360-degree feedback should be built around an organization's competency model.
D) Research shows that 360-degree feedback ratings change significantly over time.