Mary is a project manager for an infrastructure upgrade project in a Government agency. She has recently realized that a critical scheduled task exceeded the deadline and the stakeholders are on top it. The resource manager has permitted to use three more resources to work and complete the delayed task. Although, the attempt from the resource manager helps her, Mary is concerned about the task because:

A. Allocating more resources may result in rework B. Allocating more resources may shorten the duration but results in increased risk or cost C. Resources may need training to complete the task D. Allocating more resources need stakeholders approval