Bob has just finished applying a patch that he believes should fix one of the problems in an application hosted by the company's chosen cloud service provider. He closes the ticket and updates the documentation. The next day, he receives a ticket saying that something else appears to be broken on that same system. Which of the following steps of the troubleshooting model did Bob most likely forget to perform or not perform correctly? a$.$ Test the theory to determine cause b$.$ Establish a plan of action to resolve the problem and implement the solution. c$.$ Identify the problem d$.$ Verify full system functionality, and, if applicable, implement preventive measures