What evidence can be gathered in an agile tool to support the CTO’s claims?

Since Universal Containers (UC) has adopted agile methodologies, the CEO is requesting the development teams to deliver more and more work in shorter time frames. The CTO responds by saying the developers are not able to deliver the jobs they are committing to.

What evidence can be gathered in an agile tool to support the CTO’s claims?
A . The definition of done (DoD)
B. A burndown chart showing team finishes early sprint after sprint
C. A Kanban board showing there’s always the maximum allowed amount of work in progress (WIP)
D. A burndown chart showing the team misses their forecast sprint after sprint

Answer: D