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2. In the following figure, the inputs are A3424,do, the output is D. What are its propagation delay and contamination delay (12 points). A3 A2 A,Ao D Gate pad (ps) ed (ps) NOT 15 10 2-input NAND 20 15 3-input NAND 30 25 2-input NOR 30 25 3-input NOR 45 35 2-input AND 30 25 3-input AND 40 30 2-input OR 10 30 3-input OR 55 45 2-input XOR 60 40