Question: The 3-bit cascading adder shown here has the following gate delays: A Az B A B Aj B1 O 50 ns: A, to Sn or

The 3-bit cascading adder shown here has the following gate delays:

The 3-bit cascading adder shown here has the following gate delays: A Az B A B Aj B1 O 50 ns: A, to Sn or Cout,n 50 ns: B, to S, or Cout,n 35 ns: Cin,n to Sn 15 ns: Cin,n to Cout,n A B Cin A B Cin A B Cin Cout Cout Which output takes the longest before it holds the correct value? S4 S3 S2 S1

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