Sadie receives a verbally abusive voicemail from an angry customer who wants to complain about a product, followed by several text messages from the customer asking why no one has returned his call yet. Sadie is due at a mandatory meeting with the company's executive managers. Which of the following is her best course of action?

A) She should send a brief text message to the customer requesting that he send his complaints via e-mail, so that further inappropriate communication will be well documented.

B) She should not respond to the customer because he has communicated inappropriately.

C) She should skip the meeting and call the customer immediately to resolve the problem with him.

D) She should send text messages to the customer during the meeting to placate him, and if he continues to be verbally abusive, it is acceptable for her to respond in the same abusive tone.