Using 4-bit adders to create a 1See Section 6-bit adder:

[A].	requires 16 adders.
[B].	requires 4 adders.
[C].	requires the carry-out of the less significant adder to be connected to the carry-in of the next significant adder.
[D].	requires 4 adders and the connection of the carry out of the less significant adder to the carry-in of the next significant adder.

Answer: Option D

Explanation:

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