Which Statements by the Nurse Indicate Understanding of the Control

Which statements by the nurse indicate understanding of the control phase of the DMAIC process?

A) "In the control phase,only the leader should be informed of changes."
B) "Only those directly affected by the new process should be educated."
C) "In the control phase,steps in the new process should be standardized."
D) "Changes should be monitored to ensure compliance."
E) "Standard operating procedures should be written."