The Marketing Director of a National Car Parts Retail Company

The marketing director of a national car parts retail company wants to keep the 20 district managers across the country informed about marketing initiatives and experiences within the company.This information ranges from technical marketing strategies to simple stories about successful marketing experiences within the company.One or two pieces of information are communicated each week and the marketing director wants to communicate this information as quickly and cost-efficiently as possible.If you had to choose just one specific medium and form of communication within that medium,which would you choose? Justify your choice.You may assume that this company can communicate with district managers in any way currently available to organisations in your country.