Q18,paer2, j14. Which of the following statement(s) is (are) not correct ?

i. The 2’s complement of 0 is 0.

ii. In 2’s complement, the left most bit cannot be used to express a quantity.

iii. For an n-bit word (2’s complement) which includes the sign bit, there are 2^n–1 positive integers, 2^n+1 negative integers and one 0 for a total of 2^n unique states.

iv. In 2’s complement the significant information is contained in the 1’s of positive numbers and 0’s of the negative numbers.

(A) i & iv

(B) i & ii

(C) iii

(D) iv

Answer C.