A project manager drew up a resource histogram. On plotting the histogram, he found that some bars extended beyond the maximum available hours. What does this usually signify?

A. This means that the resources on those bars are being underutilized.

B. This means that a resource optimization strategy needs to be applied C. This means that the resources are producing outputs at a rate faster than the average rate.

D. This means that resources need to be reduced from the project.