Which of the Following Would Result in an Improvement in Employees

Which of the following would result in an improvement in employees' attitudes toward change?

A) At the organization's monthly meeting,Carter has a feedback session with employees and answers their queries.
B) Alexandra promotes employees who consistently exceed their targets and follow the organization's new policies.
C) Eric has given his employees steady feedback on their work as he promised he would,based on the organization's new policy.
D) Megan has provided a training session for her employees that would train them for the new processes that the change will bring about.