Which of the following notations have two representations of zero? (I) 1’s complement with radix of number being 2 (II) 7’s complement with radix of number being 8 (III) 9’s complement with radix of number being 10 (IV) 10’s complement with radix of number being 10 Select the correct answer using the codes given below:

• A.  (I) & (III)
• B.  (II), (III) & (IV)
• C.  (I), (II) & (III)
• D.  (I), (II) & (IV)

Answer: (C)