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219. When performing binary addition using the 2’s-complement method, an ________ can occur if ________ are of the same ________; the error is indicated by a(n) ________.
(a) error, both numbers, magnitude, negative sign
(b) overflow, both numbers, sign, incorrect sign bit
(c) overflow, signs, magnitude, incorrect sum
(d) error, the signs, polarity, incorrect polarity
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