LSRs Use Various Label Distribution Control Modes to Set Up

Multiple Choice

LSRs use various label distribution control modes to set up LSPs. Which of the following statements is false?

A) There are two label distribution control modes: independent and ordered.
B) If the label advertisement mode is DU and the label distribution control mode is Independent, an LSR distributes labels without waiting for labels from the downstream device.
C) If the label advertisement mode is DoD and the label distribution control mode is Independent, the transit device distributes labels only after receiving a label mapping message from the egress device.
D) If the label advertisement mode is DU and the label distribution control mode is Ordered, the transit LSR distributes labels to the ingress device only after receiving a label mapping message from the egress device.