What is the difference between MPLS and Virtual Circuit?

• A. The forwarding table is mostly used in MPLS but not in Virtual Circuit.
• B. The forwarding table is not constructed in Virtual Circuit but it is constructed in MPLS.
• C. In virtual-circuit, the user establishes new connection and launches a set up packet and created the path while there is no set up for each connection
• D. All of the above.