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EEE 120Week 3’s Extra Credit Problem’s Answer SheetA 4-Option 4-Bit Add/Sub CircuitName: Alexis GraefDate: 01/29/2020SolutionCopy and paste your design circuit here. It could be a handwritten circuit or a circuit you built on the Quartus software. There are some points dedicated for implementing your circuit on Quartus, but no points are dedicated for the hardware implementation.Note: the Add/Sub circuit has data inputs A0, A1, A2, A3 and B0, B1, B2, B3, and control inputs SA,SB. The outputs are S0, S1, S2, S3 and the overflow bit OF indicating an overflow.