How does Traceflow tool identify issues in a network?

How does Traceflow tool identify issues in a network?
A . Compares intended network state in the control plane with Tunnel End Point (TEP) keepalives in the data plane.
B . Compares the management plane configuration states containing control plane traffic and error reporting from transport node agents.
C . Injects synthetic traffic into the data plane and observes the results in the control plane.
D . Injects ICMP traffic into the data plane and observes the results in the control plane.

Answer: C