The range of integers that can be represented by an n-bit 2’s complement number system is

A

$$-2^{n-1} to (2^{n-1}-1)$$

B

$$-2(2^{n-1}-1) to (2^{-n-1}-1)$$

C

$$-2^{n-1} to 2^{n-1}$$

D

$$-2(2^{n-1}+1) to (2^{-n-1}-1)$$