The senior management at a leading global corporation has decided to promote a considerable number of its employees. Since its employees are spread all over the world, the top management is struggling to find an appropriate method to announce these promotions. They are keen on capturing and gauging the emotional joy and delight on the faces of those promoted. In such a case, which of the following would be the most appropriate method in announcing the promotions?

a. written documents

b. email

c. videoconferencing

d. bulletin boards