In a large mobile network deployment project, there is delay risk due to insufficient staffing. The risk manager is considering executing a response plan, which involves allowing staff members to work overtime. However this action may lead to excessivo additional cost What should the risk manager do? Ensure the project sponsor has the risk appetite for the residual risk created by allowing overtime Prepare a detailed response plan for the residual risk with a clear owner and time line to ensure there are no impacts to the project Manage the potential excessive additional cost as a new risk Document the concern over the potential excessive additional cost