(C) Many consultants have prescribed the following as some of the key responses to weather the crisis: (i) Develop a robust supply chain by performing vendor risk assessment. (ii) Ensure nancing remains viable by focusing on working capital management. (iii) Contain costs by reducing variable costs and converting xed to variable costs where possible. (iv) Consider non-traditional revenue streams. Give three (3) examples of management accounting information (two internal and one external) that could be used by a manager to make decisions in the above areas