The operations of addition and subtraction of signed binary numbers may be accomplished with parallel full-adders, provided that:
A) positive numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the minuend in subtraction problems.
B) negative numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the minuend in subtraction problems.
C) negative numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the subtrahend in subtraction operations.
D) negative numbers are represented in 2's-complement form and a means is provided for taking the 2's-complement of the minuend and the subtrahend in subtraction problems.
C
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