What is the z-transform of the following finite duration signal?

• A. 2 + 4z + 5z2 + 7z3 + z4
• B. 2 + 4z + 5z2 + 7z3 + z5
• C. 2 + 4z-1 + 5z-2 + 7z-3 + z-5
• D. 2z2 + 4z + 5 +7z-1 + z-3