You are managing the upgrade of your firms billing system. Midway through the project you have realized that the business requirements have changed and a new solution to the problem, originally thought to be solved by the outcome of your project, will be required. You have already consumed a lot of resources on this project. What should you doa.Issue a change request to change the course on the projectb.Notify the sponsor, discuss your concern, issue change requests to change the scope, cost and schedule baselines.c$.$Kill the projectd.Proceed with the project as per the approved plan unless a change request comes from the sponsor