identify the actions that could prevent each of the following risks from materializing or could reduce the impact if it did occur: 1. a key member of the programming team leaving; 2. introducing a new version of the operating system that has errors in it; 3. a disk containing copies of the most up-to-date version of the software under development being corrupted; 4. system testing unearthing more errors than were expected and taking longer than planned; 5. the government changes the taxation rules, altering the way that value added tax(vat) is to be calculated in an order processing system under development.