Click the Exhibit Button

Click the Exhibit button. Traffic congestion has been noticed when S1 is sending traffic to S2. You must design a CoS deployment to address the traffic congestion issue. Referring to the exhibit, which statement is true?

A) You should deploy CoS on R1 and R4.
B) You should deploy CoS on R1, R3 and R4.
C) You should deploy CoS on S1, R1, R2, R3, R4, and S2.
D) You should deploy CoS on R1, R2, R3, and R4.