Match the following List 1 to List 21. Open message --------------- i. To close an active session 2. Update message ------------ ii. Opens a BGP communications session3. Keep-alive message -------- iii. Provide routing updates to other BGP system4. Notification message ------- iv.Notifies BGP peers device is active

• A. 1-ii, 2-i, 3-iv, 4-iii
• B. 1-iv, 2-iii, 3-i, 4-ii
• C. 1-ii, 2-iii, 3-iv, 4-i
• D. 1-i, 2-ii, 3-iii, 4-iv