principles of management: Communication

Here is the question:

Patterson’s Patties is a fast-food hamburger chain with over 1,000 locations worldwide. Recently, the company has been dealing with an E. coli outbreak in its ground beef causing dozens of diners to get sick. As a result, the chain’s sales are taking a hit. The company is organizing its response to the situation from its small 20-person home office, where morale has also gone down.  Assume you are the CEO of Patterson’s. What medium of communication will you use to communicate with customers and home office employees? Select one medium for each of the two stakeholders and explain why you would utilize it.